9x50mm Suitable for 47 mm membrane filters Polystyrene, presterilized and disposable Double rim ensures tight seal An area of the lid is frosted for identification 500/pack

pH Filling Solution (for PHC301), 3M KCl, saturated with AgCl. 30mL.

Internal filling solution for use with PHC281 IntelliCAL™ Ultra pH Probes. 59 mL bottle with dispenser cap.

Potassium Chloride Solution, 50% saturated, for use in Dissolved Oxygen probe, Model 16359. 25 mL self-contained dropping bottle Platform: Solution