One thermometer bulb is kept constantly wet by a siphon reservoir while the other gives a dry temperature reading. Humidity is obtained by comparing the two readings on the enclosed chart. Uses a safe and easy to read red liquid in place of the usual mercury. Dual scales of -10/50°C and …

Monitor up to 3 environmental parameters with one tiny instrument: Wind Speed, Air Temperature, Relative Humidity (RH). Light weight, tiny size with simple, one-hand, operation. They are perfect for scientists, agricultural specialist, facilities managers, HVAC professionals, home inspectors, field…

These meters are light weight, tiny in size with simple, one-hand, operation. They are perfect for scientists, agricultural specialist, facilities managers, HVAC professionals, home inspectors, field technicians, health and safety personal, hazmat crews, outdoor enthusiasts, educators, and coaches…

This insulation tester is capable of measuring 250V, 500V or 1,000V test voltages and insulation resistance up to 2000M ohms. When undertaking power installations, the 420001-insulation tester can provide special help to test wiring. This unit can provide 125V, 250V, 500V and 1000V source for the…

This handheld device reads air velocity and temperature, and also functions as a type K or J thermometer that records data onto removable SD Cards. Records data to standard SD memory cards (like a digital camera). When full, simply exchange SD cards for unlimited data storage. The removable SD card…

Automatically records up to 16,000 data points in the field. These can later be downloaded to a computer via the meter’s RS232 port and the results viewed instantly on the ThermoLog Software which comes with the unit. Software also enables real time data logging directly from the thermometer to the…

Simply approach the source at any angle and the triple-axis meter automatically determines EMF (electro magnetic frequencies), eliminating the need for additional calculations. X, Y, and Z axis results can also be viewed independently. Measures electro magnetic fields of extremely low frequency…

Click stop controls give the definitive feel of a mechanical stopwatch but with hundreds of times the accuracy. Large LCD for good visibility. Rugged ABS plastic case. Counts to 24 hours in 1/100th second resolution for the first 30 minutes. Split interval, clock, and calendar functions. Comes with…

Highly stable and accurate readings with large LCD display Designed for simple one-hand operation Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well Features hold function and auto power  

A bright flashing yellow LED visual alarm or an audible alarm Will flash or sound continuously for weeks until shut off Counts time elapsed after the alarm N.I.S.T. traceable certificate of compliance available: 1225A44

This compact digital brix refractometer is a high-precision optical instrument that uses its own LED light source to measure brix and refractive index.Displays brix%, refractive index and temperature simultaneously.This compact digital brix meter is a high-precision optical instrument that uses its…

4 CHANNEL THERMOMETER This unique portable thermometer displays data from 4 thermocouple probes simultaneously on a large backlit LCD. Communicates with a computer via the bi-directional RS232 port and optional cable, and graphic software. Auto ranging with auto power off, minmax, hold…

Sper Scientific portable refractometers work in ambient light with no battery or other power source necessary. They can be used in labs, on production lines, in the field, or anywhere. Simply place a drop or two of sample on the prism and read the results immediately. With reasonable care their…

Standalone light meter that can also wirelessly display, log and transfer readings to your iOS or Android smartphone. Sper Scientific’s Bluetooth Light Meter is small, light, and simple to use with results displayed on the meter’s large, bright backlit display. Choose readings in lux or…

Records sound together with dB levels. This unique Sound Meter enables you to playback a live audio recording that is synced with the measured sound intensity graph. The meter and included software can quickly collect and analyze all standard sound data such as dB levels, LEQ and SPL, but also…

Protective Rubber Boot for Sper Scientific models 800004, 800007, 840045, 840046, 850014.

Features a large bar graph display, A & C decibel frequency weighting scales, min/max, peak, fast or slow response, AC or DC output, auto-power-off, low battery indicator. Covers 30 to 130 dB in the A & C scales with a resolution of 0.1 dB and an accuracy of ±1.4 dB (ref 94 dB@1KHz). Comes ready to…

Reliable DO readings at a reasonable price. Measures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal waste water, aquariums and fish hatcheries. The back-lit display simultaneously displays dissolved oxygen (in % or mg/L) and temperature readings…

Ideal for monitoring temperature in food processing, boilers and grain. Comes with a clamp for suspending the extra-long 19" (0.5M) probe in vats, tanks, and other large containers. 1-& 12;" high digits can clearly be seen from a distance. Degrees C & F switchable display and fully waterproof…

All Sper Scientific immersion thermometers are made with safe red liquid to SAMA specifications for ranges and accuracy. Length 76 mm. • Red Liquid Expansion Chambers • Reinforced Bulbs to prevent breakage • Horizontally Printed Scales are easier to read in use • Ring Tops for submersion • Non…

This multi-functional pen type water quality meter measures conductivity and total dissolved solids to determine water quality. The unit has auto calibration and automatic shut off if idle for 2 minutes. This compact unit weighs just 27 grams, is 6” in length and easily fits into a shirt…

Combines an anemometer, hygrometer, thermometer, sound and light meter into a single hand-held unit. Also reads any type-K thermocouple probe. Results are displayed on a large dual LCD with low battery and out of range indications. Features touch-tone buttons, min/max, auto power off and hold…

Measures velocity and acceleration. The large display indicates RMS, peak, min/ max, hold, and low battery. Features auto power off and an RS232 computer interface. Comes ready to use in a foam-lined hard-shell carrying case with a strongly magnetic detachable probe, 9V battery and instructions.

Numeric keypad allows for fast programming Counts up or down for 99 minutes (810024R) or 100 hours (810026R) in intervals of 1 second N.I.S.T. traceable certificate of compliance available: 1225A21 and 1225A25

Memory stores last 60 lap times Fastest, slowest, and average lap times Timer mode Water and shock resistant N.I.S.T. traceable certificate of compliance available: 0835A15

Meets IEC 61672-1:2013 Class 1 and ANSI S1.4:2014 Type 1 requirements for sound meters. Features fast or slow time weightings, peak hold and AC output. A calibration adjustment allows the user to quickly calibrate the meter's internal electronics. Can also be acoustically calibrated, in compliance…

All filled with safe red alcohol, white backed, 125mm immersion.

Wirelessly display, log and download readings. Temperature / RH / Dew Point / Wet Bulb K, J, E, N, R, S or T Thermocouple probes Bluetooth® Hi / Lo Alarms Min / Max / Ave This portable Thermo-Hygrometer displays RH, ambient temperature /dew point / wet bulb and…

Automatically log up to 12,000 readings with date and time stamps and download them to your computer or manually record and review 99 readings on the meter’s display. Features a user friendly menu, backlit dot matrix display, auto power off and a tripod screw. This portable meter is ideal for…