Water Based Developers such as ZP-5B Water Suspendable Developer and ZP-14A Water Soluble Developer are designed for optimum performance within a specific concentration range. To control the concentration, the specific gravity is measured using the Magnaflux Hydrometer.
If the hydrometer reading is high, the concentration is high and water is generally added. If the reading is low, developer is added to the bath.
Size: 12" Long
Specific Gravity Range: 1.000 to 1.220