Testing. 1  All dogs should be tested annually for heartworm infection. Since not all pets receive the proper dose of preventives, the AHS recommends a more conservative testing routine than in the past. 2  Dogs should be tested for heartworm if they are going to be switched from one preventive to another. If a pet owner switches between preventives, there are specific time periods in which their pet should be retested in order to ensure the pet is protected.
Step 4: Testing for an Open Cell in a Flooded/Wet cell battery. If you have the sealed type batteries, this test method cannot be used. Use a temperature compensating battery hydrometer for this test. a.) With the hydrometer, measure and record the specific gravity of each battery cell.
1 Before you test a circuit for voltage, be sure your test light is in good order by testing it on the car's battery. 2  The leads of the test light are reversible. 3  It doesn't matter which one goes on the positive and which goes on the ground. 4  Use whichever end makes your job the easiest.ips: 1  Before you test a circuit for voltage, be sure your test light is in good order by testing it on the car's battery. 2  The leads of the test light are reversible. 3  It doesn't matter which one goes on the positive and which goes on the ground.