3-micron filtration rating

these genuine Alexapure replacement filters deliver certified contaminant reduction you can trust

and a durable ceramic junction ideal for general-purpose field applications

General Purpose (GP) glass

and color fading

Bluelab pH Probe KCl Storage Solution – 250 ml / 8.4 fl oz aquarium phosphate test 3-micron filtration ratingThe perfect solution to store and hydrate your Bluelab pH probes or pens Features: Contains 1 bottle 250 ml 8. 4 fl oz Bluelab pH Probe KCl Storage Solution maintains probe accuracy and extends sensor lifespan between measurements. This 250 ml bottle of potassium chloride solution keeps electrodes hydrated and prevents crystallization, ensuring reliable pH readings in laboratory and field applications. Essential maintenance for precision water quality