The MA920B/1 probe is a direct stick measurement probe for use with the MW101 or MW102 PRO pH meters. Designed for the pH analysis of semisolid foods such as processed meats, soft cheeses, soups, sauces, and sushi rice or any soil growing media such as coco coir, soil, rockwool and other media. Its tough (PVDF) body and toxic free electrolyte is perfect for food or growing media! The open junction design reduces clogging from suspended solids and proteins found in food and dairy products or growing media for a more stable pH measurement and reduced maintenance. The conical shaped tip design allows for penetration into solids, semi solids, and emulsions for the direct measurement of pH in a variety of food or growing media products. Polyvinylidene fluoride (PVDF) is a food grade plastic that is resistant to most chemicals and solvents used for disinfection in the food sector, including chlorine (bleach). It is also a tough material designed to hold up extremely well in all kinds of growing media applications.