˙Each bottle of 500ml has serial number and batch inspection report
D9U-05004 PH4.01 red ROCKER
D9U-05007 PH7.00 yellow ROCKER
D9U-05010 PH10.01 Blue ROCKER
D9U-06004 PH4.01 Red Made in Taiwan
D9U-06007 PH7.00 Green Made in Taiwan
D9U-06010 PH10.01 Purple Made in Taiwan
D9U-03004 PH4.01 colorless J.T.BAKER
D9U-03007 PH7.00 colorless J.T.BAKER
D9U-03010 PH10.01 colorless J.T.BAKER