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 batteries used to power these items are lead-acid batteries and are capable of producing a constant 6 volts until they are almost fully discharged (about 80 percent). You can test if your battery is producing 6 volts using a voltmeter or multimeter.et a multimeter or voltmeter to measure volts in the range 0 to 12, if it has variable settings. The meter has two colored wires attached to it: red meaning positive and black meaning negative. On the end of the wires are metal sensors.