Visitors of all ages arriving in Canada by air require a passport or passport equivalent, such as a NEXUS card. If you need a passport right away, get a passport within 24 hrs with Rushmypassport.com.
OTC means Over the Counter, which is a test that you can buy at the store and do not need a prescription for. Many medication are called OTC which means you can just go by them without a doctor's prescription. Or it could also be an OTC stock trade.
TEST PROCEDURE: Fill the vial to the specified level with pool water. Add five drops of the OTO solution and compare the color with the sample colors on the test vial. Read and follow label directions on the kit. The DPD test is the most common type of chlorine test that utilizes two reagents (test chemicals).