pH 4.0 Standard @ 25°C, in water, 100ml Back Catalog number: 59436 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54189 Sodium Acetate (CH3OO-) Price on request 9918.11-100-ME 1-Undecene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 821-95-4 Price on request 0225.26-200-T Naphtho[1,2,3,4-ghi]perylene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 190-84-1 Price on request