Pool and spa owners, this one's important! The Taylor DPD Reagent #1 Refill is exactly what you need to keep your water testing kit stocked and ready to go. Taylor has been the go-to for water testing since way back in 1930, so you know you're getting quality that's stood the test of time. This reagent works with any test kit that uses the DPD #1 component - it's that universal. The bottle is 2 ounces and the package dimensions are pretty compact at about 4.5 inches long by 2 inches wide, and it weighs just around 0.05 pounds. What's really cool is that Taylor products are proudly made right here in the USA, so you're supporting local manufacturing while taking care of your pool or spa. Whether you have an in-ground pool, above ground pool, hot tub, or spa, keeping your water chemistry balanced is key to that crystal clear water we all love. No more cloudy water or chemical imbalances when you're using reliable Taylor reagents. Taking control of your water testing means you can enjoy your pool all season long without worrying about water quality issues. Trust the experts who've been doing this for generations - your pool will thank you!