$200 - $300

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

MA887-BOX Digital Refractometer for Seawater Measurements by Milwaukee

The MA887 is an optical instrument that employs the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish intermediates.

The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for ship, shore or home use.

The MA887 refractometer is an optical device that is simple and quick to use. Samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of three popular measurement units; Practical Salinity Units (PSU), Salinity in parts per thousand (ppt), or Specific Gravity (S.G. (20/20)).

All conversion algorithms are based upon respected scientific publications using the physical properties of seawater (not sodium chloride). The temperature (in °C or °F) is also displayed on the large dual level display along with helpful message codes.

Key features include:

• Dual-level LCD
• Automatic Temperature Compensation (ATC)
• Easy setup and storage
• Battery operation with Low Power indicator (BEPS)
• Automatically turns off after 3 minutes of non-use.

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

HI-1000P Hallway Air Intake for Interior Walls, Poly by Schaefer

• Designed to control airflow between two interior spaces
• Mounts flush to an interior wall up to 6" thick
• Durable polyethylene housing with insulated damper door and air deflectors adjust airflow volume and direction with the seasons

WD-36225-91 104A PL312 Variable- Time Output Controller 1440 Watts, 120 V 50/60 Hz by Digi-Sense

This timed control turns the output load on and off and then repeats the cycle. Each position on the knob from LO to HI represents a specific cycle time where the on time ranges from 6 to 100 percent. For example the LO setting represents a total cycle of 60 seconds with an on time of 4 seconds. This type of control can be used to regulate the temperature of resistive loads. The pilot light on the front will glow when the load is on.

• Manually set power control dial from 5 to 100% to control the output wattage

Includes

Model 36225-91 has a 6-ft cord with U.S. plug; model 36225-92 has a 4-ft cord without plug.

52" Galvanized Fan Blade for 52" Panel Fan, 30 Degree Pitch

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States