Waterproof Digital Refractometer - Clinical The Soil Makers This 6 Liter capacity Giant

This 6 Liter capacity Giant is made to fill

Adult Aphidius ervi are 4-5 mm long

Measure the untreated water coming in vs

1 Pint per Acre of Soil

Waterproof Digital Refractometer - Clinical The Soil Makers This 6 Liter capacity GiantHoused in a protective Rubberized IP65 waterproof case to safeguard the electronics from wet environments and makes for easy clean UPS. Measure samples as small as 1 ml, in the field with laboratory accuracy. Sample temperature is initially displayed on the large LCD followed by the measurement results. The sophisticated microprocessor provides automatic calibration, automatic temperature compensation and automatic shutoff (after 3 minutes). features