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PIPES, Free acid, Biotechnology Grade PIP666 CAS number: [5625-37-6] pKa (20 °C): 6.80 Useful pH range: 6.1-7.5 C8H18N2O6S2 MW: 302.4 Purity: min. 99% DNase/RNase/protease: none detected

PIPES, Sodium Salt (1.5), Biotechnology Grade PIP503 CAS number: [100037-69-2] C8H18N2O6S2 MW: 670.7 Purity: > 99% pKa (20 °C): 6.80 Useful pH range: 6.1-7.5

Storage at -20°C. CAS Number: [4264-83-9] C 6 H 4 NO 6 PNa 2 . 6H 2 O MW: 371.1 Purity (HPLC): min. 98% Appearance: off-white to yellowish Solubility (5%, water): clear, colourless to faint UV (e 312 max.): min.9600

p-NITROPHENYL-ß-D-GALACTOPYRANOSIDE (PNPG) PNP302 -20 °C C12H15NO8 MW: 301.25

POLYETHYLENE GLYCOL 3350 PEG335 CAS number: [25322-68-9] Biotechnology Grade MW: 3350 Purity: > 99.0%

POLYETHYLENE GLYCOL 8000 PEG800 CAS number: [25322-68-3] Biotechnology Grade MW: 8000 Purity: > 99.0% pH (5%, H2O): 5.0 - 7.0 DNase, RNase activity: none detected

POLYMYXIN B SULFATE POL435 CAS number: [1405-20-5] 4 °C Activity: 6,000 USP Units/mg

FICOLL 400 FIC400 Molecular Biology Grade MW: 400.000 Solubility (10%): Clear to slightly hazy Appearance: white to faint yellow Nuclease and protease: non detected

POLYVINYLPYRROLIDONE High Purity Grade PVP504 CAS number: [9003-39-8] Purity: > 99.0% pH (5%, H2O): 3.0 - 7.0 Heavy Metals (as Pb): < 0.001% MW: avg. 40,000 Viscosity: 26-35 K A component of Denhardt's Solution. Use for hybridization at concentration of 1% (w/v) for a 50X solution. Useful as a solubilizer and complexing agent in plant cell culture.

PONASTERONE A PON123 CAS number: [13408-56-5] - 20 °C C27H44O6 MW: 464.6 Purity: > 99% Solubility: methanol, ethanol, acetic acid or DMSO Insoluble in water

CAS Number: [6226-79-5] C 22 H 12 N 4 Na 4 O 13 S 4 MW: 760.57 Solution: 0.1% (w/v) Ponceau S in 5%

PONCEAU S, Sodium Salt PON001 CAS number: [6226-79-5] C22H12N4Na4O13S4 MW: 760.61

POTASSIUM ACETATE, ACS, Reagent Grade POA301 CAS number: [127-08-2] KC2H3O2 MW: 98.14 Purity: ≥ 99% Chloride: < 0.001% Sulfate: < 0.001% Heavy Metals: < 0.0005%

POTASSIUM ACETATE, Molecular Grade, 99% POA303 CAS number: [127-08-2] KC2H3O2 MW: 98.14 Purity: ≥ 99% DNase, RNase, Protease: none detected Heavy metals: < 0.0005% Solubility (1 M water): clear/colorless

POTASSIUM ACETATE, Purified Grade POA302 CAS number: [127-08-2] KC2H3O2 MW: 98.14 Purity: min. 99.0%

POTASSIUM BICARBONATE PBC401 ACS, Reagent Grade CAS number: [298-14-6] KHCO3 MW: 100.12 Purity: 99.7 - 100.5%

POTASSIUM BROMIDE, ACS Reagent Grade POB301 CAS number: [7758-02-3] KBr MW: 119.0 Purity: ≥ 99% Insolubles: < 0.005% Heavy Metals (as Pb): < 0.001%

POTASSIUM CARBONATE, ACS Grade, Anhydrous POT888 CAS number: [584-08-7] K2CO3 MW: 138.2 Purity: > 99% Insolubles: < 0.01% Heavy Metals (as Pb): < 5 ppm

POTASSIUM CARBONATE, Reagent Grade, Anhydrous POT999 CAS number: [584-08-7] K2CO3 MW: 138.2 Purity: min 99%

POTASSIUM CHLORIDE, Biotechnology Grade POC888 CAS number: [7447-40-7] KCl MW: 74.55 Purity: ≥ 99.5% DNase, RNase, Protease: none detected Heavy Metals: < 10 ppm Solubility (1 M): clear/colorless