Micro Essential Laboratory Hydrion 325 pH Test Paper Roll, ph 3.0-5.5 Oval Superhard Coating The board is made of

The board is made of durable wood

It has exceptional clarity for quick product identification

but locks are sold separately

Warranty: 1 Year Parts and labour

It's well balanced to ensure comfort

Micro Essential Laboratory Hydrion 325 pH Test Paper Roll, ph 3.0-5.5 Oval Superhard Coating The board is made ofThis short range Hydrion pH Paper provides excellent color separation in the acid range and offers clear bright single color matches at every . 5 interval from pH 3. 0 5. 5. The color chart has pH matches at [3. 0][3. 5][4. 0][4. 5][5. 0][5. 5]. Dimensions: 15 feet Includes: roll of test paper and matching color chart Hydrion pH paper may be used in diverse pH applications Provides for approximately 1000 tests