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 …

Automatically log up to 4,000 readings or manually record 99 readings, each with pH, mV (supports ORP), °C or °F, time and date Review all data on the meter’s display or download with the included software Three point calibration with automatic buffer recognition indicating the number…

Highly accurate thermometer (+/-0.3% rdg. +1 C) accepts any type K or J thermocouple probes. Fast response time over a wide temperature range (-200~1370ºC and -28~2498ºF) and high resolution (0.1 C/F). Advanced features include a large 3 /12 digit LCD, hold, auto power off, min/max/avg, and…

Compact and portable; can be used to monitor light levels anywhere or to check lux level of a specific light source Range: 0.1 to 400,000 lux, 40,000 fc Extra large LCD (1 1/2” high) with bar graph Quick, accurate responses Selenium cell photosensor is hermetically sealed…

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…

Wirelessly Display, Log and Download  Bluetooth® Hi / Lo Alarms Ice Point calibration Δ (T1-T2) Min / Max / Ave K, J, E, or T This unique portable thermometer displays data from 4 K, J, E, or T type thermocouple probes simultaneously on a large…

The 2 1/2"H x 1-1/4"W bright red LED digits are easily seen from across the room in darkness as well as in light. This wall clock has a selectable 12-hour or 24-hour display format and has PM and alarm indicators. Both the clock and alarm time can be set on the unit itself or by remote control.…

Monitor visible light levels anywhere with fast, stable and accurate response. Results are easily read on the extra large LCD (1½" high, 38.1 mm) with bar graph, low battery and over range indications. The color and cosine corrected sensor meets C.I.E. photopic spectrum. Will read LED light. Also…

The large display indoor/outdoor thermometer simultaneously displays internal and external temperature on a 33/16” x 21/2” LCD, large enough to be read across a room. Useful as an indoor/outdoor thermometer, or anywhere simultaneous internal and external readings are required. Can be…

All filled with safe red alcohol, white backed, total immersion, 6" (153 mm) long, in blue plastic holder.

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…

All Sper Scientific immersion thermometers are made with safe red liquid to SAMA specifications for ranges and accuracy. Length 305 mm. • Red Liquid Expansion Chambers • Reinforced Bulbs to prevent breakage • Horizontally Printed Scales are easier to read in use • Ring Tops for submersion • Non…

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…

Measures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal waste water, aquariums and fish hatcheries. Automatic temperature compensation as well as manual compensation for salinity and altitude (all factors directly effecting DO readings).…

Rugged housing with large LCD displaying the parameter being measured together with time, date and temperature (in ºC or ºF). Automatic or manual temperature compensation Automatic or manual ranging Automatic buffer recognition Digital and analog outputs Min/Max and 99 data points …

Sper Scientific’s LED Light Meter compensates for the wide variety of color temperatures available in modern LED lighting. Unlike standard LED Light meters which are calibrated only to a particular color temperature bulb, Sper Scientific’s LED Light Meter compensates for the wide variety of color…

Monitor up to 8 environmental parameters with one tiny instrument. Light weight, tiny 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…

4 channels can be set independently but started simultaneously Loud alarm N.I.S.T. traceable certificate of compliance available: 1225A27

Ideal for multiple and simultaneous processes Two 1/100th second displays Counts up or down to 10 hours Available with NIST Traceable® certificate of compliance In stopwatch mode the current lap time is shown in the upper display, cumulative total in lower one. Memory stores last 8 lap times…

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…

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…

Red Liquid Whirling Hygrometer (-50~50°C) Obtain fast and accurate humidity readings anywhere by comparing the reading of the wet and dry bulb thermometers on the enclosed humidity chart. Eliminates the hazard of splattering mercury by using a safe and easy to read red liquid. The…

Measures dissolved oxygen to determine water quality in environmental testing, labs, industrial and municipal waste water, aquariums and fish hatcheries. Designed for simple one-hand operation with automatic temperature compensation and calibration to air. The polarographic probe has a built in…

Advanced pH Meter Reads either pH (in 0.01 resolution) or mV in large digits, with time, date, and temperature (in ºC or ºF) shown simultaneously on the lower display. Also indicates stable reading, low battery and displays calibration data. Scroll 99 data points with time stamps and min/max…

This clamp meter offers all the features you need to fit the way you work. The small bodies and jaws fit perfectly in your hand and into tight places. Meter controls are positioned so that current measurements can be done with one hand. A large backlit display is easy to see, and the handy display…

Thomas No. 1229Q52:  ATC Temperature Probe Replacement For use with the following: pH SD Card Logger Thomas No. 1229Q61:  Conductivity Probe For use with the following meters: Pure Water Meter Benchtop Conductivity/TDS/Salinity Meter Benchtop Water Quality Meter

Includes a detachable heavy-duty probe with ¼" PS connector for liquid, air, oil and gas. Features min/max, hold, low battery indicator, auto power off and an RS232 computer interface. Comes ready to use in a foam-lined, hardshell carrying case with 9V battery and instructions.

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…

ROHS Compliant CE Mark 1-year warranty Everything necessary for immediate field use: pH SD Card logger 850060, sealed epoxy body reference combination electrode with a BNC connector and a 2½' cable, ATC temperature probe, pH buffers 4, 7, 10 and deionized water, batteries and instructions. All…