For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

Automatic temperature compensation, fast response time

Portable, easy to carry

Factory dissolved oxygen electrode (polarographic membrane type)

We are committed to providing good quality services, if you have any needs, welcome to consult，we will do our best to meet 。