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Created specifically for educational purposes, this dependable pen meter features simple operation in a slim, portable design that offers highly accurate operation time after time. You can even measure a sample of dissolved oxygen using just 1 hand. Built with the student in mind, the OHAUS DO Pen Meter features durable IP67 waterproof housing and a protective cap that safeguards the membrane. Also, it shuts off automatically to preserve battery life. Meter comes with a storage case and a wrist strap to help prevent damage due to unintentional dropping. Testing membranes have a shelf life of 9 to 12 months with regular use.
If for any reason you are not satisfied with this item, it is eligible for a return, exchange, refund, or credit up to 180 days from date of purchase. Restrictions may apply. Returns & Exchanges Policy.
