Martin Lishman - Zeal Manual Hydrometer is a traditional industry tool for fast intake sampling and measurement of dry matter and specific gravity (density).

This portable unit is specifically designed for use in the field and provides information on dry matter distribution

The Martin Lishman Weltech Digital Dry Matter Weigher (PW4) automatically calculates the dry matter content, starch percentage and specific gravity of potatoes using the weight in water method.

The best and most convenient way to measure dry matter content of your potatoes.