Jed Pools 1/2 oz. OTO and 1/2 oz. Phenol Red are for use with Standard Test Kit #481. These high quality test refills are easy to use.
|Country of Origin||USA|
|Size||1/2 oz each|
Warning: This product can expose you to chemicals including ortho-tolidine which is known to the State of California to cause cancer birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov