Duo Refill OTO/PH
TEST KIT REFILL BOTTLES OTO/PHENOL RED
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20 mL Orthotolidine (OTO) refill bottle
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20 mL Phenol (PH) refill bottle
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Child proof safety cap
20 mL Orthotolidine (OTO) refill bottle
20 mL Phenol (PH) refill bottle
Child proof safety cap