Check the listing for details. Bromothymol Blue Indicator 100 mL - pH Indicator. Condition: New. Listed at 17.95 USD. Product Information: 100mL of Bromothymol Blue indicator. A common pH indicator used in aquascape applications or applications of solutions around neutral. This indicator is blue above pH 7.6 and is yellow below pH 6.0. For best results shake bottle to mix before adding to solution.Chemicals are not intended for human consumption. Shipping: All products are shipped in sturdy packages that are insulated based on the weather in order to best maintain product quality. Most orders are shipped via USPS or UPS. Please ensure your shipping address is recognized by these carriers. Customer Satisfaction Guarantee Customer satisfaction is guaranteed if there is any problem on arrival of your order contact me through eBay for a refund or replacement.