Orion Gas-Sensing ISE membranes, Choose from loose or preassembled membranes for ease of use with Orion Gas-Sensing ISE membranes, Pack of 3

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Choose from loose or preassembled membranes for ease of use with Thermo Scientific™ Orion™ Gas-Sensing ISE membranes. Fresh membranes provide optimum performance with gas-sensing ion selective electrodes. Ammonia electrodes require different membranes if using standard electrode or high performance ammonia electrode.