Extech Heavy Duty Dissolved Oxygen Meter Replacement Membranes (10 pack)

Our Guarantee

Professional Equipment and our suppliers are dedicated to providing quality products to our customers. We stand behind our commitment to quality with a satisfaction guarantee on every purchase*. If, for any reason, a customer is not satisfied with a product, they may return it within 30 days of the date purchased for a refund of the purchase price of the product(s). Returned merchandise must be in its original box, in new condition and include all instructions, and the invoice or packing slip.

*Exceptions: Videotapes, DVDs, audiotapes, computer software (once opened), animal traps (once opened), forms, reports, custom orders and leased items are not returnable. Books are returnable within 7 days of receipt. Test chemicals, once opened are not returnable. Downloads are non-refundable.