Free Shipping on orders $125+ to USAFree GLA Scissor & Tweezer Tool Set with orders $125+ Coupon: GLATOOLS
60 ml. Reference refill solution for use with CAL AQUA LABS's dual chamber CO2 checkers. The reference solution is calibrated to 30 ppm CO2. Easy to use, no mixing required. Simply open cap and fill CO2 checker.
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