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Phenol Red 5g is a pH indicator used in acid based titrations with a colour change from yellow to red at pH 6.8 to 8.4The powder should be made up a 0.05% solution in deionised water so the 5g packet will make 10 litres of indicator solution which is enough for 1000's of titrations.
HEALTH & SAFETY : This product is not classified as hazardous under REACH & CLP legislation.Please handle all chemicals with care and keep out of reach of children
Carmoisine 5g CI number 14720, Acid red 14£5.00
Neutral Red 5g CI50040 Basic Red 5£5.00
Sirius Red F3B 5g CI35780 Direct Red 80 Chlorantine Red£6.65