Sigma-Aldrich
甘油, for molecular biology, ≥99.0%
Sigma-Aldrich
甘油, ACS reagent, ≥99.5%
Sigma-Aldrich
尿素, ACS reagent, 99.0-100.5%
Sigma-Aldrich
甘油, ReagentPlus®, ≥99.0% (GC)
Sigma-Aldrich
咪唑, ACS reagent, ≥99% (titration)
Sigma-Aldrich
尿素, powder, BioReagent, for molecular biology, suitable for cell culture
Sigma-Aldrich
咪唑, ReagentPlus®, 99%
Supelco
甘油, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
尿素, ReagentPlus®, ≥99.5%, pellets
Sigma-Aldrich
咪唑, for molecular biology, ≥99% (titration)
Sigma-Aldrich
甘油, BioXtra, ≥99% (GC)
Supelco
尿素, 8 M (after reconstitution with 16 mL high purity water)
Sigma-Aldrich
尿素 溶液, BioUltra, ~8 M in H2O
Sigma-Aldrich
咪唑, puriss. p.a., ≥99.5% (GC)
Sigma-Aldrich
尿素, puriss., meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5%, 99.0-101.0% (calc. on dry substance)
Sigma-Aldrich
甘油, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for electrophoresis, ≥99% (GC)
Sigma-Aldrich
甘油 溶液, 83.5-89.5% (T)
Sigma-Aldrich
甘油, meets USP testing specifications
Sigma-Aldrich
咪唑水溶液, BioUltra, 1 M in H2O
Sigma-Aldrich
咪唑, BioUltra, ≥99.5% (GC)
Sigma-Aldrich
甘油, BioUltra, for molecular biology, anhydrous, ≥99.5% (GC)
Sigma-Aldrich
甘油, puriss., anhydrous, 99.0-101.0% (alkalimetric)
Sigma-Aldrich
甘油 溶液, puriss., meets analytical specification of Ph. Eur., BP, 84-88%
Sigma-Aldrich
尿素, BioXtra, pH 7.5-9.5 (20 °C, 5 M in H2O)
Supelco
甘油, analytical standard
Sigma-Aldrich
尿素, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99%
Sigma-Aldrich
甘油, puriss. p.a., ACS reagent, anhydrous, dist., ≥99.5% (GC)
Sigma-Aldrich
锌, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.9%, granular