$15 - $20

Self adhesive film to provide extra protection to the keypad and display.

LSM Liquid Sensor Mounting System by Agrowtek

Two-part system for mounting SXL liquid level sensors from the top of a tank providing secure mounting, adjustable sensor heights, and easy installation and removal. Top mounting also avoids holes on the sides of the container to reduce chances of leaks.

Part 1: Cap Kit

Mount SXL optical liquid level sensors on the end of a 1" PVC pipe. Kit includes a tapped PVC cap with o-ring seal and PVC pipe fitting. Provide 1" schedule 40 or 80 PVC pipe to length.

Part 2: Flange Kit

Securely mount sensor pipes to the tank. Kit includes hardware and custom flange with locking set screw for clamping the pipe at the desired location. All stainless hardware is designed for easy service without tools after installation.

Flange can be removed from the tank by quickly removing the wing nuts. Studs remain bolted to the tank while the sensor can be pulled up and removed for cleaning and maintenance.

C-7006 Nitrite Comparator (round) by AquaPhoenix

C-7006 Nitrite Low Range Comparator is a component of K-7006 Nitrite CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7006 Nitrite CHEMets Refill. The comparator's range is applicable to many industrial and environmental applications. Color standards are pink in color and cover a range of 0-0.10 mg/L nitrite (as nitrogen).

BU5686-P Buffer, pH 6.86, 500mL by AquaPhoenix

• ± 0.02 at 25°C

pH Buffer should be used regularly, typically every day the meter is used to calibrate your pH meters. Pour buffer into a clean separate container and never return used or unused buffer back into the container. Always keep tightly capped and adhere to the expiration date which is printed on the label.

Traceable to NIST

Specifications

• Packaging Type: Poly
• Size: 500 mL
• pH Value: 6.86

FE-1250-G Flask, Glass Erlenmeyer 250mL by AquaPhoenix

Pyrex™ Borosilicate Glass Heavy Duty Flask / Erlenmeyer style, rugged tooled top finish and wide mouth. Heavy duty wide-mouth rim to reduce chipping. Graduated in durable white enamel to show approximate capacity. White square marking space. Requires No. 8 stopper for sealing (not included).

BU5003-P Buffer, pH 3.00, 500mL by AquaPhoenix

• ± 0.02 at 25°C

pH Buffer should be used regularly, typically every day the meter is used to calibrate your pH meters. Pour buffer into a clean separate container and never return used or unused buffer back into the container. Always keep tightly capped and adhere to the expiration date which is printed on the label.

Traceable to NIST

Specifications

• Packaging Type: Poly
• Size: 500mL
• pH Value: 3.0

F6-50B 50 Foot Black F Male to F Male by Test Products International

F-series coax cable assemblies with screw-on ends for broadband applications, including video and cable television.

Features

• UL Listed Cable: Ensures quality and consistency in the cable construction.
• RG-6: Cable type that is standard in the video and cable TV industry
• Molded Ends: Limits the amount of bending the cable is exposed to at the connector to prevent cable breakage.
• Screw-on F-Type Connectors: Ensure positive connection thus eliminating shadows in the picture.
• Multiple lengths up to 100 feet
• Available in black or white
• Individually bagged

FE-1125-G Flask, Glass Erlenmeyer 125mL by AquaPhoenix

Pyrex™ Borosilicate Glass Heavy Duty Flask / Erlenmeyer style, rugged tooled top finish and wide mouth. Heavy duty wide-mouth rim to reduce chipping. Graduated in durable white enamel to show approximate capacity. White square marking space. Requires No. 6 stopper for sealing (not included).

TDSK111900/P Conductivity Standard Solution, 111.9mS (Pt) by Sensorex

TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected conductivity or ppm level of total salts. Mixed Salt standards are the most frequently used in the field to sample naturally occurring water sources, boiler feed water, or cooling tower water. Typical river water, well water, or lake water sample will contain a mixture of several different salts. Sensorex Mixed Salt standards simulate a "Natural" mixture of common salt compounds found in these sources. Sodium sulfate, sodium bicarbonate, and sodium chloride salts are blended to provide a representative value. There are certain applications where Single Salt Solutions are preferred. NaCl Solution is routinely used to calibrate instruments measuring Sea Water or brackish water samples. Reagent grade salt and high resistivity DI water is compounded for accurate results. KCI Single Salt Solution may be used with conductivity meters that read directly in Siemens or Ohms. KCI (potassium chloride) is established as an international calibration standard for conductivity measurement. Choose the conductivity calibration solution that is right for your application. CA Residents: Prop 65 WARNING(S)

2999LR Test Strips: Chlorine Dioxide, 0-10 ppm by AquaPhoenix

pk. of 50. Easy and affordable way to check water quality without reagents or field kits. Range: 0-500 ppm.

0554 2013 Wall Mount for testo 160 THEL by Testo

Attach your Wi-Fi data logger to the wall using the wall bracket for testo 160 TH / THE / E / THL.

• For attaching the testo 160 data logger to the wall
• Comes with cut outs for screws and cable ties
• Can also be used with adhesive strips

Includes:

1 x wall bracket, including the unlocking key and double-sided adhesive strips

A-1410 Ammonia Solution Pack by AquaPhoenix

A-1410 is designed to be a refill of the accessory solutions found in the K-1420 Ammonia CHEMets® Test Kit (HBA). It contains: Two 10 mL bottles of A-1404 Stabilizer Solution, two 10 mL bottles of A-1405 Catalyzer Solution, and two 10 mL bottles of A-1406 Activator Solution. This is enough of each solution to perform approximately 80 tests.

93581 Night Vision Red Headlamp by Celestron

The disruptive glare of white light can ruin your stargazing experience in an instant. Steer clear of white light while still navigating your observing site safely with this astronomer's essential, the Night Vision Red Headlamp. Designed specifically to preserve your night vision, and powered by a long-lasting LED, this headlamp provides the perfect amount red-light illumination, ensuring comfortable stargazing sessions where you can see more detail in celestial objects by preserving your dark-adapted vision.

Using the Night Vision Red Headlamp is simple and intuitive. First, install (2) AAA batteries, and then adjust the headlamp strap for a comfortable and secure fit, so it sits snugly on your head. Next, adjust the lamp's pointing position up to 45° to direct the light exactly where you need it. Depending on the task at hand, the headlamp is equipped with two red brightness levels, a blinking light, and an SOS setting. You can walk around your observing site, read star charts, or even grab that eyepiece you left in your gear bag, all while preserving your night vision.

Rigorously tested to ensure reliability and longevity, the Celestron Night Vision Red Headlamp provides up to 100 hours of continuous illumination, when set to the low brightness setting. That means you can rely on your headlamp to accompany you through countless stargazing sessions, camping trips, and outdoor adventures without worrying about running out of power. And if you do run out of juice, simply pop in fresh batteries and keep going–no need to find a power source and wait to recharge via USB.

• Optimal Night Vision: A traditional white flashlight can ruin your night vision in an instant. Preserve your eyes' dark adaptation while navigating your environment safely with this red-only LED headlamp. It minimizes disruption and allows for extended stargazing sessions without eye strain.
• Hands-Free Convenience: Enjoy the freedom of hands-free illumination with this adjustable headlamp. It's perfect for setting up telescopes, handling star charts, and more.
• Multiple Light Modes: Seamlessly switch between two brightness levels, a blinking light, and an SOS setting.
• Comfortable Fit: The adjustable, ergonomic head strap provides a secure and comfortable fit, ideal for long nights under the stars. And with a 45° adjustable angle, you can direct the light where you want it.
• Long Battery Life: Powered by an efficient LED, this headlamp offers up to 100 hours of continuous use, ensuring reliable performance for all your adventures.
• Versatile and Portable: Perfect for astronomers, campers, and outdoor enthusiasts, this headlamp is a versatile, grab-and-go tool for a variety of nighttime activities.

TDSK180/P Conductivity Solution, 85.2ppm/180uS, 1Pt. by Sensorex

TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected conductivity or ppm level of total salts. Mixed Salt standards are the most frequently used in the field to sample naturally occurring water sources, boiler feed water, or cooling tower water. Typical river water, well water, or lake water sample will contain a mixture of several different salts. Sensorex Mixed Salt standards simulate a "Natural" mixture of common salt compounds found in these sources. Sodium sulfate, sodium bicarbonate, and sodium chloride salts are blended to provide a representative value. There are certain applications where Single Salt Solutions are preferred. NaCl Solution is routinely used to calibrate instruments measuring Sea Water or brackish water samples. Reagent grade salt and high resistivity DI water is compounded for accurate results. KCI Single Salt Solution may be used with conductivity meters that read directly in Siemens or Ohms. KCI (potassium chloride) is established as an international calibration standard for conductivity measurement. Choose the conductivity calibration solution that is right for your application. CA Residents: Prop 65 WARNING(S)

ZE4175-P Zero Oxygen Standard, 500mL by AquaPhoenix

Specifications

• Packaging Type: Poly
• Size: 500 mL