Analytical Chemistry Standards

Acetonitrile — HPLC Grade

High-purity acetonitrile optimized for HPLC and UHPLC. Features exceptionally low metal ion content and high UV transmittance.

CAS

75-05-8

Purity

≥ 99.9%

Methanol — HPLC Grade

Premium gradient-grade methanol for HPLC and HPLC applications, ensuring low baseline noise and minimal organic impurities.

CAS

67-56-1

Purity

≥ 99.9%

Water — HPLC Grade

Ultrapure water specifically processed for HPLC applications, free from trace metals and organic contaminants.

CAS

7732-18-5

Purity

Ultrapure

2-Propanol (Isopropanol) — HPLC Grade

High-purity 2-Propanol suitable for HPLC mobile phases and HPLC washing protocols. Low particulate and metal content.

CAS

67-63-0

Purity

≥ 99.9%

Hexane — HPLC Grade

HPLC-grade hexane with high UV transmittance and low residue after evaporation. Ideal for normal-phase chromatography.

CAS

110-54-3

Purity

≥ 95.0%

Dichloromethane — HPLC Grade

High-purity dichloromethane stabilized with amylene. Formulated for HPLC and environmental extraction procedures.

CAS

75-09-2

Purity

≥ 99.8%

Ethyl Acetate — HPLC Grade

HPLC-grade ethyl acetate featuring low water content and high UV cutoff. Suitable for analytical separations and extractions.

CAS

141-78-6

Purity

≥ 99.8%

Acetone — HPLC Grade

High UV transmittance acetone for HPLC and spectrophotometric applications. Low moisture and evaporation residue.

CAS

67-64-1

Purity

≥ 99.8%

Ethanol (Absolute) — HPLC Grade

Absolute ethanol optimized for HPLC mobile phases and pharmaceutical analysis. Free from denaturants.

CAS

64-17-5

Purity

≥ 99.9%

Tetrahydrofuran (THF) — HPLC Grade

Unstabilized, high-purity THF for Gel Permeation Chromatography (GPC) and HPLC. Exceptionally low peroxide levels.

CAS

109-99-9

Purity

≥ 99.9%

Dimethyl Sulfoxide (DMSO) — Headspace GC Grade

Specifically purified and tested for the analysis of residual solvents (OVI) in pharmaceuticals by Headspace GC.

CAS

67-68-5

Purity

≥ 99.9%

N,N-Dimethylformamide (DMF) — Headspace GC Grade

Ultra-pure DMF tailored for Headspace Gas Chromatography in pharmaceutical residual solvent testing. Minimal interfering peaks.

CAS

68-12-2

Purity

≥ 99.9%

Toluene — HPLC Grade

Highly pure toluene with low residue after evaporation, ideal for normal-phase chromatography and extractions.

CAS

108-88-3

Purity

≥ 99.8%

Chloroform — HPLC Grade

Stabilized with amylene. High purity suitable for HPLC, sample extractions, and organic synthesis workflows.

CAS

67-66-3

Purity

≥ 99.8%

Heptane — HPLC Grade

Often preferred over hexane for toxicity reasons. High purity heptane for normal-phase HPLC and sample prep.

CAS

142-82-5

Purity

≥ 99.0%

Methyl tert-Butyl Ether (MTBE) — HPLC Grade

High UV transmittance MTBE for HPLC extractions and organic phase separations. Low peroxide formulation.

CAS

1634-04-4

Purity

≥ 99.8%

Multielement Ion Chromatography Cation Standard

Certified reference material TraceCERT®, containing Li+, Na+, K+, Mg2+, Ca2+, suitable for ion chromatography.

Multielement Ion Chromatography Anion Standard

Certified reference material TraceCERT®, containing F⁻, Cl⁻, Br⁻, NO₃⁻, PO₄³⁻, SO₄²⁻, suitable for ion chromatography.

Fluoride Standard for IC

Fluoride standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Chloride Standard for IC

Chloride standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Sulfate Standard for IC

Sulfate standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Nitrate Standard for IC

Nitrate standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Nitrite Standard for IC

Nitrite standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Phosphate Standard for IC

Phosphate standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Bromide Standard for IC

Bromide standard for Ion Chromatography, TraceCERT® certified reference material traceable to NIST.

Nitric Acid — Trace Metal Grade

High-purity nitric acid for trace metal analysis by ICP-MS and AAS. Extremely low limits of metallic impurities.

CAS

7697-37-2

Purity

69%

Nitric Acid — ACS Grade

High-purity nitric acid for analysis

CAS

7697-37-2

Purity

69%

Hydrochloric Acid — ACS Reagent

Fuming hydrochloric acid meeting ACS specifications. Ideal for titrimetry, sample digestion, and general laboratory use.

CAS

7647-01-0

Purity

37%

Sulfuric Acid — ACS Reagent

Concentrated sulfuric acid suitable for quantitative analysis, dehydrating agent, and wet chemistry workflows.

CAS

7664-93-9

Purity

95-97%

Acetic Acid (Glacial) — LC-MS Grade

High-purity glacial acetic acid optimized as a mobile phase additive for LC-MS/UHPLC. Excellent baseline stability.

CAS

64-19-7

Purity

≥ 99.7%

Formic Acid — LC-MS Grade

Premium grade formic acid for LC-MS applications. Facilitates protonation and enhances MS detection of peptides and proteins.

CAS

64-18-6

Purity

~ 98%

Phosphoric Acid — ACS Reagent

High-purity orthophosphoric acid for buffer preparation, sample digestion, and HPLC mobile phases.

CAS

7664-38-2

Purity

85%

Perchloric Acid — ACS Reagent

High-purity perchloric acid suitable for wet digestion of organic matter and titration in non-aqueous media.

CAS

7601-90-3

Purity

70%

Hydrofluoric Acid — Trace Metal Grade

High-purity hydrofluoric acid for trace element analysis and silicate digestion. Exceptional purity profile for ICP-MS.

CAS

7664-39-3

Purity

48%

Citric Acid — ACS Reagent

Citric acid for buffer preparation, analytical lab applications, and as a chelating agent.

CAS

77-92-9

Purity

≥ 99.5%

L-Ascorbic Acid — Analytical Reagent

High-purity L-ascorbic acid used as a reducing agent, antioxidant, and in spectrophotometric determinations.

CAS

50-81-7

Purity

≥ 99.0%

Boric Acid — ACS Reagent

High-purity boric acid widely used for buffer solutions, TBE buffer preparation, and electrophoresis.

CAS

10043-35-3

Purity

≥ 99.5%

Trichloroacetic Acid (TCA) — ACS Reagent

High-purity TCA primarily used for protein precipitation and DNA/RNA extraction workflows.

CAS

76-03-9

Purity

≥ 99.0%

Sodium Chloride — ACS Reagent

High-purity sodium chloride suitable for routine laboratory applications, buffer preparation, and analytical standardizations.

CAS

7647-14-5

Purity

≥ 99.5%

Potassium Chloride — Analytical Grade

Analytical grade potassium chloride for preparation of conductivity standards and electrode storage solutions.

CAS

7447-40-7

Purity

≥ 99.0%

Sodium Bicarbonate — ACS Reagent

ACS grade sodium bicarbonate for analytical chemistry, buffering, and acid neutralization.

CAS

144-55-8

Purity

≥ 99.7%

Magnesium Sulfate — Reagent Grade

Magnesium sulfate used widely as a drying agent in organic synthesis and extractions.

CAS

7487-88-9

Purity

≥ 99.5%

Calcium Chloride — ACS Reagent

Granular calcium chloride ideal for use in desiccators and drying tubes.

CAS

10043-52-4

Purity

≥ 96.0%

Potassium Iodide — ACS Reagent

High-purity potassium iodide for iodometric titrations and preparation of iodine solutions.

CAS

7681-11-0

Purity

≥ 99.0%

Sodium Acetate — ACS Reagent

Sodium acetate used in buffer solutions, DNA precipitation, and organic synthesis.

CAS

127-09-3

Purity

≥ 99.0%

Ammonium Chloride — ACS Reagent

High-purity ammonium chloride suitable for analytical applications, buffering, and cooling baths.

CAS

12125-02-9

Purity

≥ 99.5%

Copper(II) Sulfate Pentahydrate — Analytical Grade

Analytical grade copper sulfate for biuret reagent preparation and general chemical applications.

CAS

7758-99-8

Purity

≥ 98.0%

Iron(III) Chloride Hexahydrate — ACS Reagent

High-purity ferric chloride for water testing, chemical synthesis, and etching applications.

CAS

10025-77-1

Purity

≥ 97.0%

Ammonium Sulfate — ACS Reagent

High-purity ammonium sulfate for protein precipitation, crystallization, and general biochemical applications.

CAS

7783-20-2

Purity

≥ 99.0%

Potassium Phosphate Monobasic — HPLC Grade

Monobasic potassium phosphate (KH₂PO₄) optimized for buffer preparation and HPLC mobile phases.

CAS

7778-77-0

Purity

≥ 99.0%

Sodium Sulfate (Anhydrous) — ACS Reagent

Granular anhydrous sodium sulfate commonly used as a highly efficient drying agent for organic extracts.

CAS

7757-82-6

Purity

≥ 99.0%

Magnesium Chloride Hexahydrate — Molecular Biology Grade

High-purity MgCl₂ hexahydrate tested for DNase, RNase, and protease, ideal for PCR and molecular biology workflows.

CAS

7791-18-6

Purity

≥ 99.0%

Zinc Sulfate Heptahydrate — ACS Reagent

ACS reagent grade zinc sulfate used in analytical titrations, standardizations, and cell culture media.

CAS

7446-20-0

Purity

≥ 99.0%

Sodium Thiosulfate Pentahydrate — ACS Reagent

Standard reagent widely utilized for iodometric titrations, determination of dissolved oxygen, and chlorine testing.

CAS

10102-17-7

Purity

≥ 99.5%

Sodium Carbonate (Anhydrous) — ACS Reagent

High-purity sodium carbonate for buffer preparation, water treatment analysis, and general laboratory use.

CAS

497-19-8

Purity

≥ 99.5%

Potassium Carbonate (Anhydrous) — ACS Reagent

ACS grade potassium carbonate used as a mild drying agent and in alkaline buffer solutions.

CAS

584-08-7

Purity

≥ 99.0%

Sodium Phosphate Dibasic — ACS Reagent

Ideal for the preparation of phosphate buffer saline (PBS) and biological research.

CAS

7558-79-4

Purity

≥ 99.0%

Sodium Phosphate Monobasic Monohydrate — ACS Reagent

Used in conjunction with dibasic sodium phosphate to prepare pH-stable buffer solutions.

CAS

10049-21-5

Purity

≥ 99.0%

Potassium Phosphate Dibasic — ACS Reagent

Highly soluble buffer component commonly used in HPLC mobile phases and cell culture media.

CAS

7758-11-4

Purity

≥ 99.0%

Barium Chloride Dihydrate — ACS Reagent

Used analytically for the precipitation and turbidimetric determination of sulfate ions.

CAS

10326-27-9

Purity

≥ 99.0%

Lithium Chloride — ACS Reagent

High-purity salt used in the synthesis of lithium compounds and as a humectant.

CAS

7447-41-8

Purity

≥ 99.0%

Iron(II) Sulfate Heptahydrate — ACS Reagent

Standard reducing agent in redox titrations and for water purification processes.

CAS

7782-63-0

Purity

≥ 99.0%

Potassium Sulfate — ACS Reagent

Analytical grade potassium sulfate used in Kjeldahl nitrogen determination.

CAS

7778-80-5

Purity

≥ 99.0%

Aluminum Sulfate Hexadecahydrate — ACS Reagent

Used extensively as a flocculating agent in water purification and analytical procedures.

CAS

16828-11-8

Purity

98-102%

Manganese(II) Chloride Tetrahydrate — ACS Reagent

High-purity manganese salt used in enzymatic assays and biological research.

CAS

13446-34-9

Purity

≥ 98.0%

Manganese(II) Sulfate Monohydrate — ACS Reagent

Used as a catalyst in various analytical oxidations and nutritional studies.

CAS

10034-96-5

Purity

≥ 98.0%

Cobalt(II) Chloride Hexahydrate — ACS Reagent

Used as a moisture indicator and standard for colorimetric testing.

CAS

7791-13-1

Purity

98-102%

Sodium Tetraborate Decahydrate (Borax) — ACS Reagent

High-purity sodium tetraborate decahydrate used for preparing alkaline borate buffer solutions and as a primary standard for acidimetry.

CAS

1303-96-4

Purity

≥ 99.5%

Ammonium Acetate — LC-MS Grade

High-purity volatile buffer salt, ideal for preparing mobile phases in LC-MS and HPLC analyses.

CAS

631-61-8

Purity

≥ 99.0%

Sodium Citrate Dihydrate — ACS Reagent

Trisodium citrate dihydrate used for preparing citrate buffers, DNA/RNA extraction workflows, and general analytical use.

CAS

6132-04-3

Purity

≥ 99.0%

Potassium Citrate Monohydrate — ACS Reagent

High-purity potassium citrate for buffering, electrolyte solutions, and general laboratory preparation.

CAS

6100-05-6

Purity

≥ 99.0%

Potassium Oxalate Monohydrate — ACS Reagent

Used in the preparation of oxalate buffers, redox standardizations, and as an anticoagulant in blood diagnostics.

CAS

6487-48-5

Purity

≥ 99.0%

Ammonium Formate — LC-MS Grade

Ultra-pure volatile buffer salt widely used as an additive for reversed-phase LC-MS to enhance ionization.

CAS

540-69-2

Purity

≥ 99.0%

Sodium Formate — ACS Reagent

Analytical grade sodium formate suitable for the preparation of formate buffers and as a reducing agent.

CAS

141-53-7

Purity

≥ 99.0%

Sodium Tartrate Dihydrate — ACS Reagent

Standard reagent used for standardizing Karl Fischer volumetric reagents and preparing tartrate buffers.

CAS

6106-24-7

Purity

≥ 99.0%

Ammonium Bicarbonate — HPLC Grade

Volatile buffer component utilized in enzymatic protein digestions and HPLC separations.

CAS

1066-33-7

Purity

≥ 99.0%

Silver Nitrate — ACS Reagent

High-purity silver nitrate for argentometric titrations, halide determinations, and general analytical use.

CAS

7761-88-8

Purity

≥ 99.0%

Ammonium Carbonate — ACS Reagent

Ammonium carbonate ACS grade, used as a buffer component, neutralizing agent, and in analytical precipitations.

CAS

506-87-6

Purity

≥ 30.0% NH₃ basis

Barium Carbonate — ACS Reagent

High-purity barium carbonate utilized in glass manufacturing analysis, ceramics, and standardizing acid solutions.

CAS

513-77-9

Purity

≥ 99.0%

Lithium Carbonate — ACS Reagent

Analytical grade lithium carbonate for the preparation of lithium-based fluxes, ceramic glazes, and battery materials analysis.

CAS

554-13-2

Purity

≥ 99.0%

Nickel(II) Sulfate Hexahydrate — ACS Reagent

High-purity nickel sulfate used in electroplating, as a mordant in dyeing, and in the preparation of other nickel compounds.

CAS

10101-97-0

Purity

≥ 98.0%

Nickel(II) Chloride Hexahydrate — ACS Reagent

Important source of nickel for chemical synthesis and widely used as an additive in nickel plating baths.

CAS

7791-20-0

Purity

≥ 98.0%

Zinc Chloride — ACS Reagent

Versatile anhydrous salt used as a catalyst, dehydrating agent, and flux for soldering in metallurgical operations.

CAS

7646-85-7

Purity

≥ 97.0%

Potassium Nitrate — ACS Reagent

High-purity potassium nitrate used as an oxidizing agent, in analytical testing, and for buffer preparations.

CAS

7757-79-1

Purity

≥ 99.0%

Copper(II) Chloride Dihydrate — ACS Reagent

Used extensively as a catalyst in organic and inorganic synthesis, and as a mordant in dyeing applications.

CAS

10125-13-0

Purity

≥ 99.0%

Cobalt(II) Sulfate Heptahydrate — ACS Reagent

Used in the preparation of pigments, as well as in the manufacture of other cobalt salts and analytical reagents.

CAS

10026-24-1

Purity

≥ 99.0%

Tin(II) Chloride Dihydrate — ACS Reagent

Standard reducing agent used in analytical chemistry and for the colorimetric determination of molybdenum.

CAS

10025-69-1

Purity

≥ 98.0%

Sodium Fluoride — ACS Reagent

High-purity sodium fluoride for preparation of fluoride standards, enzymatic assays, and metallurgical fluxes.

CAS

7681-49-4

Purity

≥ 99.0%

Potassium Fluoride — ACS Reagent

Used as a fluorinating agent in organic synthesis and in the manufacture of fluxes and silver solders.

CAS

7789-23-3

Purity

≥ 99.0%

Potassium Cyanide — ACS Reagent

High-purity potassium cyanide used in electroplating, metallurgy, and organic synthesis.

CAS

151-50-8

Purity

≥ 97.0%

Sodium Cyanide — ACS Reagent

Versatile reagent used in chemical synthesis, extraction processes, and specialized analytical workflows.

CAS

143-33-9

Purity

≥ 97.0%

Ammonium Acetate — LC-MS Grade

High-purity volatile buffer salt, ideal for preparing mobile phases in LC-MS and HPLC analyses.

CAS

631-61-8

Purity

≥ 99.0%

Ammonium Formate — LC-MS Grade

Ultra-pure volatile buffer salt widely used as an additive for reversed-phase LC-MS to enhance ionization.

CAS

540-69-2

Purity

≥ 99.0%

Triethylammonium Acetate (TEAA) Buffer — 1.0 M

Pre-made 1.0 M TEAA buffer solution for ion-pair reversed-phase HPLC of oligonucleotides and DNA/RNA purification.

CAS

5204-74-0

Ammonium Bicarbonate — LC-MS Grade

Highly pure volatile buffer component utilized in enzymatic protein digestions and LC-MS mobile phases.

CAS

1066-33-7

Purity

≥ 99.5%

Triethylamine (TEA) — HPLC Grade

High-purity triethylamine used as an ion-pairing reagent and buffer additive to improve peak shape of basic compounds in HPLC.

CAS

121-44-8

Purity

≥ 99.5%

Trifluoroacetic Acid (TFA) — LC-MS Ampoules

Ultrapure TFA in convenient 1 mL ampoules for easy and precise preparation of LC-MS mobile phases.

CAS

76-05-1

Purity

≥ 99.5%

Formic Acid — LC-MS Ampoules

High-purity formic acid sealed in 1 mL ampoules to prevent contamination, ensuring consistent LC-MS baseline.

CAS

64-18-6

Purity

≥ 99.0%

Acetic Acid — LC-MS Ampoules

LC-MS grade glacial acetic acid in 1 mL ampoules, ideal for buffering mobile phases without introducing trace metal impurities.

CAS

64-19-7

Purity

≥ 99.5%

Heptafluorobutyric Acid (HFBA) — LC-MS Grade

Strong ion-pairing agent for LC-MS, providing excellent retention and separation for highly polar basic analytes.

CAS

375-22-4

Purity

≥ 99.5%

Ammonium Hydroxide Solution — LC-MS Grade

High-purity ammonium hydroxide for adjusting pH of LC-MS mobile phases into the alkaline range, enhancing negative ion electrospray.

CAS

1336-21-6

Potassium Dihydrogen Phosphate — HPLC Grade

Highly pure buffer salt with very low UV absorbance at low wavelengths, essential for reliable HPLC-UV separations.

CAS

7778-77-0

Purity

≥ 99.5%

Dipotassium Hydrogen Phosphate — HPLC Grade

Analytical grade dibasic potassium phosphate, optimized for HPLC buffers requiring pH adjustment near neutral.

CAS

7758-11-4

Purity

≥ 99.5%

Sodium Phosphate Monobasic Monohydrate — HPLC Grade

High-purity sodium phosphate for LC applications. Strict limits on trace metals to avoid baseline drift and column degradation.

CAS

10049-21-5

Purity

≥ 99.5%

Sodium Citrate Dihydrate — HPLC Grade

Citrate buffer salt with excellent optical purity for liquid chromatography and amino acid analysis workflows.

CAS

6132-04-3

Purity

≥ 99.5%

Diisopropylamine (DIPA) — HPLC Grade

Volatile secondary amine frequently used as an additive to reverse phase mobile phases to mask residual silanol groups.

CAS

111-15-9

Purity

≥ 99.5%

Sodium Hydroxide (Pellets) — ACS Reagent

High-purity sodium hydroxide pellets for general alkalimetry, pH adjustment, and synthesis workflows.

CAS

1310-73-2

Purity

≥ 97.0%

Potassium Hydroxide (Pellets) — ACS Reagent

ACS grade potassium hydroxide pellets for preparing alkaline solutions, titrants, and organic synthesis.

CAS

1310-58-3

Purity

≥ 85.0%

Ammonium Hydroxide Solution — ACS Reagent

High-purity aqueous ammonia solution used in complexometric titrations, buffering, and analytical separations.

CAS

1336-21-6

Purity

28-30% NH₃

Calcium Hydroxide (Powder) — ACS Reagent

Fine calcium hydroxide powder suitable for acid neutralization, precipitations, and standard analytical lab use.

CAS

1305-62-0

Purity

≥ 95.0%

Barium Hydroxide Octahydrate — ACS Reagent

Standard reagent used in alkalimetric titrations (especially for weak organic acids) due to its clear, carbonate-free solutions.

CAS

12230-71-6

Purity

≥ 98.0%

Lithium Hydroxide Monohydrate — ACS Reagent

High-purity lithium base for analytical and synthetic chemistry, including the preparation of lithium salts and specific buffers.

CAS

1310-66-3

Purity

≥ 98.0%

Sodium Hydroxide Solution (1.0 N) — Titrant

Standardized 1.0 N sodium hydroxide volumetric solution, ready-to-use for precision acid-base titrations.

CAS

1310-73-2

Potassium Hydroxide Solution (0.1 N) — Ethanolic

Ethanolic 0.1 N KOH standard volumetric solution, specifically formulated for the determination of acid value in fats and oils.

CAS

1310-58-3

Magnesium Hydroxide (Powder) — ACS Reagent

High-purity magnesium hydroxide for analytical use, acid neutralization, and environmental treatments.

CAS

1309-42-8

Purity

≥ 95.0%

Tetramethylammonium Hydroxide (TMAH) — 25% Aqueous

Strong organic base used as a phase-transfer catalyst, photolithography developer, and in semiconductor manufacturing.

CAS

75-59-2

Sodium Methoxide Solution — 25% in Methanol

Highly reactive alkoxide base used in organic synthesis, deprotonation, and transesterification reactions.

CAS

124-41-4

Potassium tert-Butoxide — Reagent Grade

Strong, non-nucleophilic base commonly used in organic chemistry for elimination and deprotonation reactions.

CAS

865-47-4

Purity

≥ 98.0%

Cesium Hydroxide Monohydrate — ACS Reagent

Exceptionally strong base used in the preparation of cesium salts and as a catalyst in organic synthesis.

CAS

35103-79-8

Purity

≥ 99.5%

Aquastar® CombiTitrant 5 — Karl Fischer Reagent

One-component pyridine-free Karl Fischer volumetric reagent for moisture determination. 1 mL corresponds to approximately 5 mg water.

Phenolphthalein — Indicator Grade

Standard pH indicator for acid-base titrations, transitioning from colorless to pink (pH 8.2–10.0).

CAS

77-09-8

Purity

ACS Reagent

Methyl Orange — Indicator Grade

Commonly used pH indicator for titrating strong acids, with a visual transition from red to yellow (pH 3.1–4.4).

CAS

547-58-0

Purity

ACS Reagent

Methyl Red — Indicator Grade

Azo dye pH indicator turning red in acidic solutions and yellow in basic solutions (pH 4.4–6.2).

CAS

493-52-7

Purity

ACS Reagent

Bromothymol Blue — Indicator Grade

Used for measuring substances that have relatively neutral pH values. Yellow to blue transition (pH 6.0–7.6).

CAS

76-59-5

Purity

ACS Reagent

Eriochrome Black T — Complexometric Indicator

Complexometric indicator widely used for determining water hardness (calcium and magnesium ions).

CAS

1787-61-7

Purity

ACS Reagent

Bromocresol Green — Indicator Grade

Dye of the triphenylmethane family used as an indicator in applications such as DNA agarose gels and acid-base titrations.

CAS

76-60-8

Purity

ACS Reagent

Phenol Red — Indicator Grade

Water-soluble dye used as a pH indicator in cell culture media, transitioning from yellow to red (pH 6.8–8.2).

CAS

143-74-8

Purity

ACS Reagent

Starch, Soluble — Iodometric Indicator

Soluble starch formulated for use as an indicator in iodometric titrations (producing a deep blue color with iodine).

CAS

9005-84-9

Purity

ACS Reagent

Murexide — Complexometric Indicator

Standard indicator used in analytical chemistry for the complexometric titration of calcium and rare earth metals.

CAS

3051-09-0

Purity

ACS Reagent

Thymol Blue — Indicator Grade

A pH indicator with two transition ranges: red to yellow (pH 1.2–2.8) and yellow to blue (pH 8.0–9.6).

CAS

76-61-9

Purity

ACS Reagent

Cresol Red — Indicator Grade

pH indicator dye frequently used in molecular biology and acid-base titrations (pH 7.2–8.8).

CAS

1733-12-6

Purity

ACS Reagent

Alizarin Red S — Indicator Grade

Water-soluble dye used as a pH indicator and for the colorimetric determination of calcium and fluoride.

CAS

130-22-3

Purity

ACS Reagent

Thymolphthalein — Indicator Grade

Acid-base indicator that transitions from colorless to blue at strongly basic levels (pH 9.3–10.5).

CAS

125-20-2

Purity

ACS Reagent

Methylene Blue — Redox Indicator

Versatile dye used as a redox indicator, biological stain, and in various analytical titrations.

CAS

61-73-4

Purity

ACS Reagent

Ferroin Solution — Redox Indicator

Standard redox indicator widely used in COD (Chemical Oxygen Demand) determinations and cerimetry.

CAS

14708-99-7

Purity

Indicator Grade

Calcein — Complexometric Indicator

Fluorescent complexometric indicator highly specific for the direct titration of calcium in the presence of magnesium.

CAS

1461-15-0

Purity

Indicator Grade

Xylenol Orange Tetrasodium Salt — Indicator

Complexometric indicator for metal ions such as bismuth, lead, and zinc in weakly acidic solutions.

CAS

3618-43-7

Purity

ACS Reagent

1,10-Phenanthroline Monohydrate — ACS Reagent

Forms highly colored complexes with iron; used as a redox indicator and for the colorimetric determination of iron.

CAS

5144-89-8

Purity

ACS Reagent

Litmus Powder — pH Indicator

Classic natural pH indicator derived from lichens, turning red under acidic conditions and blue under basic conditions.

CAS

1393-92-6

Purity

Indicator Grade

Congo Red — Indicator Grade

Secondary diazo dye used as a pH indicator (transitioning blue to red) and as a biological stain for amyloidosis.

CAS

573-58-0

Purity

Indicator Grade

EDTA Disodium Salt Solution — 0.1 M

Standardized volumetric solution for complexometric titrations and determination of metal ions like calcium and magnesium.

CAS

6381-92-6

Silver Nitrate Solution — 0.1 N

Ready-to-use argentometric titrant for the determination of halides (chlorides, bromides) and cyanides.

CAS

7761-88-8

Sodium Thiosulfate Solution — 0.1 N

Standard volumetric solution widely used for iodometric titrations and determining active chlorine.

CAS

10102-17-7

Potassium Permanganate Solution — 0.1 N

Strong oxidizing titrant for redox titrations, including the determination of iron, oxalates, and hydrogen peroxide.

CAS

7722-64-7

Iodine Solution — 0.05 M (0.1 N)

Standardized iodine solution used for direct iodometric titrations of reducing agents like ascorbic acid or sulfides.

CAS

7553-56-2

Hydrochloric Acid Solution — 0.1 N

Standardized 0.1 N HCl volumetric solution for routine acid-base titrations and acidimetry.

CAS

7647-01-0

Sodium Hydroxide Solution — 0.1 N

Standardized 0.1 N NaOH titrant for alkalimetric determination of acidic substances.

CAS

1310-73-2

Perchloric Acid Solution — 0.1 N

Non-aqueous titrant for the determination of weak bases, widely used in pharmaceutical quality control (Ph. Eur., USP).

CAS

7601-90-3

Sulfuric Acid Solution — 0.1 N

Standard volumetric sulfuric acid used in general acidimetry and nitrogen determination (Kjeldahl).

CAS

7664-93-9

Cerium(IV) Sulfate Solution — 0.1 N

Strong oxidant for cerimetric redox titrations, highly stable and ideal for pharmaceutical assays.

CAS

13590-82-4

Potassium Dichromate Solution — 0.1 N

Standardized redox titrant commonly applied in the determination of iron and chemical oxygen demand (COD).

CAS

7778-50-9

Ammonium Thiocyanate Solution — 0.1 N

Standard solution used in the Volhard method for the back-titration of excess silver in halide determinations.

CAS

1762-95-4

Tetrabutylammonium Hydroxide (TBAH) — 0.1 N

Non-aqueous basic titrant for the determination of weak acids in pharmaceutical and petrochemical industries.

CAS

2052-49-5

pH 4.00 Buffer Solution — Phthalate Standard

NIST-traceable potassium hydrogen phthalate (KHP) pH 4.00 buffer. Colour-coded red. ISO/IEC 17025 accredited. Suitable for pH meter calibration.

CAS

877-24-7

pH 7.00 Buffer Solution — Phosphate Standard

NIST-traceable sodium-potassium phosphate pH 7.00 buffer. Colour-coded yellow. Certified to ASTM E70 and ISO 4316.

pH 10.00 Buffer Solution — Borate/Carbonate Standard

NIST-traceable borate-carbonate pH 10.00 buffer. Colour-coded blue. Supplied with certificate of analysis and uncertainty budget.

Conductivity Standard — 147 µS/cm (KCl)

Potassium chloride conductivity standard at 147 µS/cm (25°C) for low-range conductivity meter calibration. NIST traceable.

CAS

7447-40-7

Conductivity Standard — 1413 µS/cm (KCl)

Mid-range KCl conductivity standard at 1413 µS/cm (25°C), matching the WHO guideline value for drinking water conductivity.

CAS

7447-40-7

pH Electrode Refill Solution — 3M KCl

3M Potassium chloride (KCl) aqueous solution for refilling liquid-filled pH and ORP electrodes.

CAS

7447-40-7

pH Electrode Storage Solution

Specially formulated storage solution to maintain pH glass electrode hydration and maximize sensor lifespan.

CAS

7447-40-7

pH 1.68 Buffer Solution — Tetroxalate Standard

NIST primary standard reference pH 1.68 tetroxalate buffer for low-pH electrode calibration and acid measurement verification.

pH 4.00 Buffer Solution — Certipur®

Buffer solution (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 4.00 (20°C) Certipur®.

pH 10.00 Buffer Solution — Certipur®

Buffer solution (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 10.00 (20°C) Certipur®.

pH 7.00 Buffer Solution — Certipur®

Buffer solution (di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20°C) Certipur®.

Conductivity Standard — 84 µS/cm

High-precision conductivity standard at 84 µS/cm (25°C), traceable to NIST. Ideal for calibrating low-range conductivity cells.

pH 6.86 Buffer Solution

Precision pH buffer solution for the calibration of pH measurement instruments.

Conductivity Standard 12.8 mS/cm (0.1 mol/L KCl) — Certipur®

Potassium chloride solution (nominal 12.8 mS/cm) certified reference material for the measurement of electrolytic conductivity, Certipur®.

CAS

7447-40-7

Dissolved Oxygen (DO) Zero Calibration Standard

Zero oxygen calibration solution designed for the accurate zero-point calibration of dissolved oxygen meters and sensors.

pH 2.00 Buffer Solution

Precision pH buffer solution for the calibration of pH measurement instruments in highly acidic ranges.

pH 9.00 Buffer Solution

Precision pH buffer solution for the calibration of pH measurement instruments in mildly alkaline ranges.

pH 12.00 Buffer Solution

Precision pH buffer solution for the calibration of pH measurement instruments in highly alkaline ranges.