Laboratory Chemicals

Strong mineral acid for digestion, titration and pH adjustment, supplied from Extra Pure through AR to trace-metal ultrapure grade.

HCl · 36.46 g/mol · 35–37% w/w (also supplied at 32%, 25% and 10%)

Concentrated sulphuric acid for digestion, dehydration and titrimetry, in Extra Pure, AR and trace-metal grades.

H₂SO₄ · 98.08 g/mol · 98% w/w

Oxidising mineral acid for microwave and hot-plate digestion, available to ACS specification and in sub-ppb trace-metal grade.

HNO₃ · 63.01 g/mol · 69–70% w/w (also 65% and 60%)

Phosphoric acid for mobile-phase pH control and general analysis, including a dedicated HPLC grade.

H₃PO₄ · 98.00 g/mol · 85% w/w

Glacial acetic acid across Extra Pure, AR and pharmacopoeial grades, with HPLC grade for chromatography.

CH₃COOH · 60.05 g/mol · ≥ 99.5%

Aqueous ammonia for pH adjustment, complexometric buffering and general analysis.

NH₄OH · 35.05 g/mol · 25% or 30% w/w

Methanol across the full grade ladder — Extra Pure, AR, HPLC, LC-MS, GC headspace and specially dried.

CH₃OH · 32.04 g/mol · ≥ 99.8% (HPLC grade)

The reversed-phase workhorse, in gradient-tested HPLC, LC-MS and specially dried grades.

CH₃CN · 41.05 g/mol · ≥ 99.9% (HPLC grade)

General-purpose and HPLC-grade acetone, plus electronic grade for precision cleaning.

(CH₃)₂CO · 58.08 g/mol · ≥ 99.5%

Isopropanol in AR, HPLC and pharmacopoeial grades for cleaning, extraction and chromatography.

C₃H₈O · 60.10 g/mol · ≥ 99.7%

Absolute and denatured ethanol for extraction, staining and histological dehydration.

C₂H₅OH · 46.07 g/mol · ≥ 99.9%

THF in HPLC, GR and specially dried grades, stabilised or unstabilised to order.

C₄H₈O · 72.11 g/mol · ≥ 99.5%

Sodium chloride in Extra Pure, AR and pharmacopoeial grades for buffers, media and standard preparation.

NaCl · 58.44 g/mol · ≥ 99.5%

Potassium chloride for conductivity standards, electrode filling solution and buffer work.

KCl · 74.55 g/mol · ≥ 99.5%

Anhydrous soda ash, the primary standard for acid standardisation.

Na₂CO₃ · 105.99 g/mol · ≥ 99.5%

Sodium bicarbonate in AR and pharmacopoeial grades for buffers and culture media.

NaHCO₃ · 84.01 g/mol · ≥ 99.5%

Permanganate crystals for redox titration, COD determination and oxygen demand testing.

KMnO₄ · 158.03 g/mol · ≥ 99%

Primary-standard dichromate, and the 0.25 N digestion solution used for chemical oxygen demand.

K₂Cr₂O₇ · 294.18 g/mol · ≥ 99.9%

Primary-standard oxalic acid for permanganate standardisation, with ready 0.1 N solution.

C₂H₂O₄·2H₂O · 126.07 g/mol · ≥ 99.5%

Anhydrous citric acid in AR and pharmacopoeial grades for buffer systems and chelation.

C₆H₈O₇ · 192.12 g/mol · ≥ 99.5%

Anhydrous D-glucose in AR and pharmacopoeial grades for media and assay work.

C₆H₁₂O₆ · 180.16 g/mol · ≥ 99.5%

Urea in AR and molecular-biology grades for protein denaturation and nitrogen work.

CH₄N₂O · 60.06 g/mol · ≥ 99.5%

Formalin for histological fixation and preservation, in AR and molecular-biology grades.

CH₂O · 30.03 g/mol · 37–41% w/v, methanol stabilised

Glycerol in AR, pharmacopoeial and molecular-biology grades.

C₃H₈O₃ · 92.09 g/mol · ≥ 99.5%

Ready-standardised 0.1 N sodium hydroxide with the batch factor printed and dated. Also supplied at 0.5 N and 1 N.

NaOH

Ready-standardised disodium EDTA titrant for hardness and metal ion determination.

Standardised argentometric titrant for chloride determination, supplied in amber glass.

Standardised iodine solution for iodimetric titration, in amber glass.

I₂

Ready-standardised hydrochloric acid titrant, factor printed and dated. Also at 0.5 N and 1 N.

HCl

Offered in Extra Pure grade. Listed in a 1000 ml pack.

Phenolphthalein powder and 1% alcoholic solution — colourless below pH 8.3, pink above.

C₂₀H₁₄O₄ · 318.33 g/mol

Methyl orange to ACS specification — red below pH 3.1, yellow above pH 4.4.

C₁₄H₁₄N₃NaO₃S · 327.33 g/mol

Methyl red in AR grade — red below pH 4.4, yellow above pH 6.2.

C₁₅H₁₅N₃O₂ · 269.30 g/mol

Complexometric indicator for total hardness titration against EDTA.

C₂₀H₁₂N₃NaO₇S · 461.38 g/mol

Soluble potato starch, the redox indicator for iodometric titration.

(C₆H₁₀O₅)ₙ

Gram stain primary dye, supplied in AR grade and in microscopy grade with certified dye content.

C₂₅H₃₀ClN₃ · 407.98 g/mol

Colour-coded ready-to-use pH buffer solutions at 25 °C, supplied with batch certificate. Also available as capsules and tablets.

Tris base in AR and molecular-biology grades — the standard buffer for pH 7 to 9 biological work.

C₄H₁₁NO₃ · 121.14 g/mol · ≥ 99.8%

Bacteriological-grade agar for solid and semi-solid culture media.

Dibasic sodium phosphate dihydrate for phosphate buffer preparation.

Na₂HPO₄·2H₂O · 177.99 g/mol · ≥ 99%

C4H10N2O4S, M.W. 182.20. Offered in Extra Pure grade. Listed in 2 pack sizes from 25 g to 100 g.

C4H10N2O4S · 182.20 · 99%

Offered in USP grade. Listed in a 500 ml pack.

C15H20O4, M.W. 264.3. Offered in Extra Pure grade. Listed in 3 pack sizes from 25 mg to 500 mg.

C15H20O4 · 264.3 · 98%

C13H14N2O3, M.W. 246.27. Offered in For Biochemistry grade. Listed in a 25 g pack.

C13H14N2O3 · 246.27 · 99%

Offered in Extra Pure grade. Listed in 4 pack sizes from 100 mg to 5 g.

C10H12N5Na2O7P, M.W. 391.19. Offered in Extra Pure grade. Listed in 3 pack sizes from 1 g to 25 g.

C10H12N5Na2O7P · 391.19

C10H14N5Na2O13P3, M.W. 551.15. Offered in Extra Pure grade. Listed in 3 pack sizes from 1 g to 25 g.

C10H14N5Na2O13P3 · 551.15

Offered in Extra Pure grade. Listed in 3 pack sizes from 5 g to 100 g.

Dehydrated agar medium. Listed in a 500 g pack.

Dehydrated culture medium. Listed in a 500 g pack.

Dehydrated agar medium. Listed in a 500 g pack.

Dehydrated agar medium. Listed in a 500 g pack.

Dehydrated culture medium. Listed in a 500 g pack.

Dehydrated culture medium. Listed in a 500 g pack.

Single-element atomic absorption standards at 1000 mg/L in the correct acid matrix, with traceable certificate.

Single and multi-element ICP-OES and ICP-MS standards, prepared gravimetrically with certified traceability.

Potassium chloride conductivity standards at 84 µS/cm, 1413 µS/cm and 12.88 mS/cm, certified at 25 °C.

Offered in Extra Pure grade. Listed in a 500 ml pack.

Offered in Extra Pure grade. Listed in 2 pack sizes from 500 ml to 1000 ml.

Offered in Extra Pure grade. Listed in 2 pack sizes from 500 ml to 1000 ml.