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.
The batteryâs positive [+] terminal is normally at the outer edge and the negative [â] is towards the inside. The third contact is the thermistor, which monitors battery temperature. For a quick test, the thermistor does not need to be hooked up. The fourth contact, if available, provides a code for battery identification. Figure 3 illustrates typical contact positioning.