Adopted from , these test strips are durable and practical for use. 6-in-1 extensive testing, these test strips could meet your different needs. Reliably identify contaminants in your hot , bringing you a healthy environment. Features -Color: White -Material: Paper -Size: Approx. 10.50X4.00X4.00cm / 4.13X1.57X1.57in - This item is a daily life necessity, and we should pay more attention to our health. - Suitable for various water quality tests of drinking water, aquarium, swimming pools and spas, ponds, hot , field water, etc. - Pool testing for above ground pool, hot bath fresh and testing saltwater pools, spas, and hot tubs, keep your and . - Swimming test strips are easy to store and carry, portable to take anywhere you like. - Weekly test the water if water or fish problems appear, monitor your fish tank(aquarium), ensure your to grow happier and healthier. Package list: 2 of Test Strips (100Pcs /Box)