$200 - $300

3661 pH/ORP Controller/Transmitter Voltage Output, LED Display by Jenco

pH, ORP, Temperature In-line Controller. 1/8 DIN, RoHS compliant, panel mount pH/ORP/Temp controller with 2 sets of programmable on/off relay and backlight. Extremely price competitive.

• Easy to install 1/8 DIN plastic casing.
• Clear LCD displays pH, mV or temperature with backlight.
• Universal power supply input from 100 to 240 V AC.
• Automatic buffer recognition of US and NIST buffer sets. Calibrated data is stored in memory and ready to for use on power up.
• Automatic or manual temperature compensation.
• Displays absolute and relative ORP.
• Two sets of programmable on/off relays for pH or ORP & Isolated and reversible
• 4 to 20 mA current output for pH or ORP allows it to be used as a proportional output.
• CE, RoHs compliant.

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

MA885-BOX Digital Refractometer for Wine and Grape Product Measurements by Milwaukee

The MA885 is optical instrument that is based on the measurement of the refractive index of a solution. The measurement of refractive index is simple and quick and provides the vintner an accepted method for sugar content analysis.

Samples are measured after a simple user calibration with steam distilled water (starter bottle provided with your unit).

Within seconds the instrument measures the refractive index of the grape. This digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for measurements in the field.

The instrument utilizes internationally recognized references for unit conversion and temperature compensation.

Temperature (in °C or °F) is displayed simultaneously with the measurement on the large dual level display along with icons for Low Power and other helpful message codes.

Key features include:

• Dual-level LCD
• Automatic Temperature Compensation (ATC)
• Easy setup and storage
• Battery operation with Low Power indicator
• Automatically turns off after 3 minutes of non-use
• Single-point calibration with steam distilled water (starter bottle provided with your unit)
• Waterproof models offers IP65 waterproof protection
• Quick, precise results readings are displayed in approximately 1.5 seconds
• Small sample size as small as 2 metric drops

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

Part Number: J404A500PA

GHS1032 SDS Double Center with 2 Binders, English/Spanish by GHS Safety

GHS Safety Data Sheet Information Center provides a central place to easily access all S.D.S. sheets for your plant or office. The Center comes with a sturdy metal pocket designed to hold the included binder. The mounting board is constructed of 1/4" plastic with 4 mounting holes to provide easy mounting and years of durability. Each center comes with 2 standard 3 ring SDS printed binders with A - Z alphabetical dividers to sort all of your Safety Data Sheets. The mounting board is constructed of 1/4" plastic with 4 mounting holes to provide easy installation and years of durability. 24" x 36" English / Spanish

610-0051-100 Single-Gas Calibration (Hydrogen Sulfide, 10 PPM, Balance N2), 34 Liters by RAE Systems

Green cylinder technology not only saves the environment, it also saves time and money.

• Gas cylinder size options 34, 58 and 116 liter
• Green Refillable cylinder
• "Strip and Ship" program for easy return of empty cylinders
• Small cylinder footprint
• Cylinder technology offers exceptional gas stability
• All gas cylinders use the same valve

S465C-ORP ORP Sensor, Platinum, PPS, Acu-trol, BNR by Sensorex

Sensorex offers an industrial grade high quality direct fit replacement for the Acu-Trol® pH and ORP electrodes. The Sensorex pH & ORP electrodes contain a higher volume proprietary polymer gel for longer sensor life. These electrodes will provide superior performance at a price that offers an exceptional value.

Recommended applications include: Swimming pool control, industrial water treatment, potable water systems, boiler feedwater and municipal wastewater plants

• Direct fit replacement for Acu-Trol® pH & ORP electrodes
• PPS construction offers improved chemical resistance
• Increased reference gel capacity extends electrode life
• Advanced signal shielding for superior noise reduction
• Threaded 1/2" NPT connection for in line installation

MC510 ORP Controller by Milwaukee

With Milwaukee's MC Controllers you can monitor and control pH and/or ORP levels.

The Milwaukee Instruments "MC" Controllers have a user selectable set point and a visual "Power Activated" LED notification light. Power to the controller box is turned on when the reading is Above or Below ( user selected ) the selected set point. These MC Controllers are ideal for CO2 or ozone dosing.

With each Milwaukee Smart controller, your aquarium will have the individual attention that it needs.

Each unit comes with 12 VDC adapter, mounting kit, probe, probe holder and starter calibration solution for pH. (factory calibrated for ORP)

• User selectable Hi/Low Set Point
• Visual LED alarm
• Supplied with 12 VDC adapter
• 1 power plug for O3 dosing
• Platinum ORP electrode (BNC connector)