Waterproof Digital Refractometer - Diesel Exhaust Fluid nutrient-combo Greensand is recommended for use

Greensand is recommended for use on lawns

For use with up to 16' round hoop house

Versatile Application: Great for use in planting mixes

Wide Range of Sizes: Catering to various needs

Waterproof Digital Refractometer - Diesel Exhaust Fluid nutrient-combo Greensand is recommended for useHoused 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