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Greetings! I am Mohamed Nasik from Pearl Prestige Pools. We have a requirement for the below mentioned Items. Please send us the best price and lead time for the same. 1. Phenol Red (Indicator solution for pH valve (pH) test) 250ml - 50 nos 2. Orthotolidine OTO (Indicator solution for chlorine (CL) test) 250ml - 50 nos Please let me know if you require any further information or assistance. Looking forward to hearing from you as early as possible. Thank you.