The InstaTest® Salt (Sodium Chloride) pool & spa strip measures from 1500, 2000, 2500, 3000, 3500, 4000, and 5000 ppm. This test strip is a dip-n-read strip with results in 20 seconds. Each bottle includes 10 test strips packaged in a waterproof PopTop bottle with a molded desiccant liner, which protects the strips from moisture and UV light. This product is available with trilingual (English, Spanish, French) instructions.