Bromothymol Blue Gauge 0.04% — 250ml (8oz) — Includes Empty 50ml Dropper Bottle & Dispensing Cap — pH 6.0 (Yellow) - pH 7.6 (Blue)

Bromothymol Blue Indicator 0.04% (w/v) — 250 mL (8.4 fl oz) — Includes an Empty 50 mL Dropper Bottle and Dispensing Cap — pH 6.0 (Yellow) - pH 7.6 (Blue)

Phenolphthalein pH Indicator 1% Solution — 250 mL (8.4 fl oz) Bottle Plus 1 Dropper Bottle containing 50 mL of Solution