Check the listing for details. AquaChek Borate Test Strips (25 Count). Condition: New. Listed at 17.99 USD. Tests for Borate – Algae Inhibitor AquaChek Borate is used in conjunction with sanitizers to kill bacteria and inhibit algae growth in your water, with AquaChek Borate Test Strips you can test for borates in just seconds. DIRECTIONS: 1. Dip strip in water for 2 seconds. Do not shake off excess water. 2. Hold strip level, pad side up for 15 seconds. 3. Compare test strip to color chart on side of bottle. SHIPPING: We will do our best to ship your order based on the shipping method selected, however in some cases, your shipping method may need to be modified to meet shipping requirements based on the carrier. Our current carriers used are UPS, FedEx and USPS. Please contact us directly through the "Contact Seller" link if you need UPS, FedEx or USPS specifically for your order.