This is a Taylor Long Range Indicator replacement reagent for various Taylor pool water testing kits. This replacement reagent has a bottle size of 16 ounces. These reagents are designed to provide accurate and easy to read results.It is used for pH Test with Taylor Kits.Having proper test kit supplies on hand is essential to proper pool maintenance and care. Taylor test kits and this replacement item provide you with accurate pool chemistry testing results of your swimming pool water on a regular basis. This Taylor Long Range Indicator is one essential component needed for your pool's test kit. Please Note: Date of manufacture is not the controlling factor when it comes to shelf life. Storage conditions are more important. Refer to the Reagent Shelf Life document posted under Additional Resources.