Step 15. Rerub the Lewisite Detecting Tablet with the rubbing
tab (Figure 4-15). Make sure the second rub mark is
next to the first rub mark. Immediately observe spots
for a color difference between the two marks.
Step 16. Immediately turn the sampler over to determine safe or
danger conditions (Figure 4-16). Color comparisons can
also be made by the operator using those shown on the
Disregard blue area under Nerve Spot Rim.
Figure 4-15. Perform Steps using No. 5 Ampoules,
then rerub Lewisite Tablet
Back of Sampler