Is molecular biology grade water the same as DEPC-treated water?

Not exactly. DEPC treatment inactivates RNases chemically, and the residual DEPC is then destroyed by autoclaving. Molecular biology grade water may be produced by DEPC treatment or by ultrafiltration, so check the method on the COA if it matters.

Should I aliquot molecular biology reagents after opening?

Yes. Splitting stock solutions into single-use aliquots reduces the chance of introducing nucleases with repeated pipetting. Wear gloves and use nuclease-free tips and tubes.

Does this grade test for endotoxin?

Not usually. Endotoxin matters for cell culture and in vivo work and is tested only in grades labelled low endotoxin or cell culture tested. Ask for that grade if endotoxin is a concern.

Chemical grade

Molecular Biology Grade chemicals

Biochemicals tested for absence of DNase, RNase and protease activity, with low metals, for PCR, cloning and nucleic acid work.

199 products in this grade

Molecular Biology Grade products

25–48 of 199 products

Amberlite IRA-400 Chloride form, Strong base anion exchanger, for molecular biology

CAS: 122560-63-8
Formula: C₂₉H₃₄ClN
MW: 432 g/mol

ZX-019524

Amberlitte XAD-7HP, for molecular biology

CAS: 37380-43-1

ZX-038295

Amberllite IRC120 H, hydrogen form, for molecular biology

CAS: 39389-20-3

ZX-038294

Amido black 10B, for molecular biology

CAS: 1064-48-8
Formula: C₂₂H₁₄N₆Na₂O₉S₂
MW: 616.5 g/mol

ZX-037624

Ammonium acetate, for molecular biology, 98%

CAS: 631-61-8
Formula: C₂H₇NO₂
MW: 77.08 g/mol

ZX-003266

Ammonium chloride, for molecular biology, 99%+

CAS: 12125-02-9
Formula: ClH₄N
MW: 53.49 g/mol

ZX-003267

Ammonium citrate, dibasic, for molecular biology

CAS: 3012-65-5
Formula: C₆H₁₄N₂O₇
MW: 226.18 g/mol

ZX-038054

Ammonium dihydrogenphosphate, for molecular biology 99.0%

CAS: 7722-76-1
Formula: H₆NO₄P
MW: 115.03 g/mol

ZX-037497

Ammonium molybdate tetrahydrate, for molecular biology 99.0%

CAS: 12054-85-2
Formula: (NH₄)₆Mo₇O_24.4H₂O
MW: 1235.86 g/mol

ZX-037499

Ammonium persulphate, for molecular biology, 99%+

CAS: 7727-54-0
Formula: H₈N₂O₈S₂
MW: 228.21 g/mol

ZX-003268

Ammonium phosphate, dibasic, for molecular biology

CAS: 7783-28-0
Formula: H₉N₂O₄P
MW: 132.06 g/mol

ZX-038055

Ammonium sulphate 3.2 M ultrapure solution, for molecular biology

CAS: 7783-20-2
Formula: H₈N₂O₄S
MW: 132.14 g/mol

ZX-037260

Ammonium thiocyanate, for molecular biology

CAS: 1762-95-4
Formula: CH₄N₂S
MW: 76.12 g/mol

ZX-038053

Ampicillin sodium salt, for molecular biology

CAS: 69-52-3
Formula: C₁₆H₁₈N₃NaO₄S
MW: 371.4 g/mol

ZX-038043

Avidin, From Egg White, for molecular biology

CAS: 1405-69-2
Formula: C₄H₈O₂
MW: 88.11 g/mol

ZX-019456

BES buffer, for molecular biology

CAS: 10191-18-1
Formula: C₆H₁₅NO₅S
MW: 213.25 g/mol

ZX-038024

Bicine, for molecular biology

CAS: 150-25-4
Formula: C₆H₁₃NO₄
MW: 163.17 g/mol

ZX-038025

Bis-tris, 98%

CAS: 6976-37-0
Formula: C₈H₁₉NO₅
MW: 209.24 g/mol

ZX-003061

Blue Dextran Form Leuconostoc Mesenteroides, for molecular biology

CAS: 87915-38-6
Formula: C₂₅H₁₇FN₆
MW: 420.4 g/mol

ZX-019444

Boric acid, for molecular biology 99.5%

CAS: 10043-35-3
Formula: BH₃O₃
MW: 61.84 g/mol

ZX-003274

Briton X 100, for molecular biology

CAS: 9002-93-1
Formula: C₃₄H₆₂O₁₁

ZX-003279

Bromo phenol blue, for molecular biology

CAS: 115-39-9
Formula: C₁₉H₁₀Br₄O₅S
MW: 670 g/mol

ZX-037629

Bromo thymol blue, AR, for molecular biology

CAS: 76-59-5
Formula: C₂₇H₂₈Br₂O₅S
MW: 624.4 g/mol

ZX-038147

Bromo thymol blue, for molecular biology

CAS: 76-59-5
Formula: C₂₇H₂₈Br₂O₅S
MW: 624.4 g/mol

ZX-037631

Compare with other grades

HPLC Grade GC Grade AR Grade (Analytical Reagent)ACS Grade LR Grade (Laboratory Reagent)Extra Pure Grade Spectroscopy Grade LC-MS Grade IP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)Ph. Eur. Grade (European Pharmacopoeia)Food Grade (FCC)Technical Grade Electronic Grade Deuterated and Stable-Isotope-Labelled Compounds Pharmaceutical Secondary Reference Standards Grades guide

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