This is a waterproof pen meter with a professional design for reliable performance. It is fitted with a large LCD screen for easy viewing. This pen meter is easy and safe to operate.

• Fast response, reliable and accurate measurements.
• Large LCD display 21 x 18 mm for reading easily.
• Impact resistant ABS casing.
• Waterproof: IP57 rated.
• 1 or 2 points (pH only) manual calibration via screw trim pot.
• The electrode module is changeable for replacement by users.