(1) Lower the temperature of the glass mixing slab to between 65 and 75 F
(18 to 24 C), if the glass mixing slab is not already cooled below the temperature at
which moisture will condense on it.
Blend the powder slowly.
Mix the powder over a large area of the cool slab.
Use a longer mixing time, within optimum limits.
1-14. PREPARATION AND USAGE OF ZINC PHOSPHATE CEMENT
a. Equipment. The equipment required for mixing zinc phosphate cement
consists of a glass mixing slab, a stainless steel spatula, and a matched set of powder
and liquid (see figure 1-3).
Figure 1-3. Setup for mixing zinc phosphate cement.