$25 - $50

K-3503 Copper Vacu-vials® (0-12.00 ppm & 0-7.00 ppm) by AquaPhoenix

94460-06 Traceable® Lightweight Digital Stopwatch with Calibration by Digi-Sense

Weighs less than an ounce wear it all day without even knowing it's there! Stopwatch displays time and date and provides a sound confirmation each time a button is pressed.

Traceable® products are calibrated to NIST-traceable standards and ready to use as soon as you receive it. Each product goes through an intense vetting process before it can carry the Traceable name, and it includes NIST-traceable certification. This means that a 17025-accredited calibration test lab has confirmed that the product meets or exceeds all stated specifications, saving you both time and money by not having to calibrate separately.

NIST-traceable calibration also helps you meet quality standards and regulatory compliance for ISO, FDA, cGMP, VFC, CAP, CLIA and Joint Commission requirements.

• Get accurate, reliable measurements with included NIST-traceable calibration

Includes

Neck cord, button cell battery, and NIST-traceable calibration certificate with data.

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

8636300 Hardness, High Range Chemkehy Reagents by AquaPhoenix

Use with the SL1000 Portable Parallel Analyzer (PPA) for dramatically streamlined water quality testing.

Avoid the hassle by avoiding titrations with our easy to use colorimetric Hardness Chemkey. The Hach SL1000 Portable Parallel Analyzer (PPA) performs the same tests with less than half the manual steps. Get highly accurate results, with less opportunity for errors, in a fraction of the time. Up to six parameters, tested in parallel. The SL1000 is a portable colorimeter that provides faster testing by using Chemkey reagents instead of powder pillows. All chemicals and processes are entirely contained inside the Chemkey.

High Range Hardness Chemkeys, range 90 - 750 mg/L CaCO3. For SL1000 Portable Parallel Analyzer (PPA).

10-108-10 Hydrogen Chloride Colorimetric Gas Detection Tube, 1 - 20 ppmv with Desiccant (5 Colorimetric Tubes and 5 Pre-Tubes) by RAE Systems

RAE Systems colorimetric gas detection tubes enable quick, on-the-spot measurement of a wide range of toxic and combustible gases and vapors. RAE Systems tubes are easy to read, and provide a sharp, clear color change directly corresponding to the concentration of gas present. RAE Systems tubes are compatible with the RAE Systems piston hand pump, a reliable way to draw samples of an exact volume required for the most accurate measurements.

Key Features

• Wide assortment of tubes available to detect over 300 gases and vapors
• Easyto use, even in multiple layers of gloves
• Easy-to-read with sharp,clearcolorchange
• No calibration or other maintenance required

Applications

• Oil and gas
• Chemicals and petrochemicals
• Agriculture and pestcontro
• Food and beverage production
• Environmental protection
• Fire service
• HazMat response
• Nationalsecurity

*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

T76 Waterproof TDS Tester with Replaceable Electrode (high range) by Milwaukee

These instruments are designed for all applications. It's IP65 Waterproof casing and replaceable electrode make them suitable also for heavy duty applications, such as Waste Water treatment and Agriculture. The modular design allows easy electrode and battery replacement.

All Waterproof testers are supplied in a leather casing complete with calibration solution, batteries, instruction manual and screwdriver for calibration.

The T76 is a waterproof TDS tester with automatic temperature compensation, 1 point manual calibration and a range of 0 to 9999 ppm (mg/L). The tester has a replaceable electrode and is supplied complete with sachets of calibration solution, leather casing and calibration screwdriver.

81036 NexGO Universal Smartphone Adapter by Celestron

The NexGO Universal Smartphone Adapter is a great first step into the world of astroimaging or digiscoping. The NexGO provides you everything you need to capture sharp, detailed images and video.

NexGO fits any eyepiece from 25.4mm (1.0") to 44.45mm (1.75") in diameter, including most telescopes with 1.25" eyepieces, spotting scopes, monoculars, binoculars, and microscopes.

NexGO accommodates a wide range of smartphones including the latest devices from Apple, Samsung, and Google. The phone platform is fully adjustable and can fit any device–usually with the case still on. For older phones that are 5" tall or less, the NexGO includes a booster to ensure the fit with the device.

Precise Alignment

The NexGO sports rack and pinion X- and Y- fine adjustment knobs for precise alignment and it folds up to a smaller size for easy transport. Secure the NexGO smartphone adapter to your eyepiece by tightening the orange knob which will clamp the unit around the eyepiece.

Maximize your storage space when traveling or not in use, the NexGO smartphone adapter collapses to a compact configuration for easy transportation and storing.

NOTE: The X and Y adjustment racks come calibrated from the factory, but should you need to adjust them, go to the Support & Downloads tab and read our Tension Adjustment Guide for details.

Robust Construction

The secure platform stands up to rigorous field use thanks to its robust, durable construction with a metal frame and polymer body. The NexGO will stand up to years of outdoor adventures.

Easy as Ever

Most adapters rely on you placing your phone perfectly on the platform and only offer limited adjustments. But NexGO gives you the power to place your phone on the platform, center it over the eyepiece with the X and Y adjustment knobs until you have the entire field of view in your shot.

From start to finish, the process only takes about 30 seconds, including the time it takes to insert the phone into NexGO, attach NexGO to an eyepiece, start the camera app, and center the camera over the eyepiece using the knobs.

Switching phones, eyepieces, or optical instruments, requires only slight adjustments to re-center the camera over the new eyepiece. If multiple people want to capture a shot through your optic, NexGO's simple spring-loaded clamps make it easy to remove one device and replace it with another in seconds. NexGO is the ideal solution for star parties and group bird walks where everyone wants their own shot of the action.

You can also switch your image from portrait to landscape simply by turning the padded eyepiece clamp and readjusting the X- and Y-axis to realign your phone with the eyepiece.

NOTE: NexGO is compatible with telescopes, spotting scopes, binoculars, monoculars, and microscopes. NexGO works with most phone cases, but if you have an especially large phone case with built-in batteries or a folio-style case, you may need to remove it.

• A complete digiscoping solution: NexGO connects your smartphone to your optic eyepiece
• NexGO's design works with most optics including telescopes (with most 1.25" eyepieces), spotting scopes, binoculars, monoculars, and microscopes.
• Folds up for easy transport and storage.
• Charge your phone during use.
• Features two directional knobs (X-, and Y- axis) that perfectly align your phone's camera with the eyepiece in seconds.
• Stands up to rigorous field use thanks to its robust, durable construction with a metal frame and polymer body.

*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

58-600-1M RG58/U, BNC Male to BNC Male, 50 Feet by Test Products International

50 Ohm, 75 Ohm, 93 Ohm. TPI BNC to BNC coax cable assemblies include: RG58/U (molded and assembled), RG59/U and RG62/U.

Features

• UL Listed Cable: Ensures quality and consistency in the cable construction.
• Boot is molded to cable connector for added strength: Limits the amount of bending the cable is exposed to at the connector to prevent cable breakage.
• Gold center pins: Ensures that there is a high quality connection maintaining the best return loss in high definition applications.
• Machined Brass Connectors: Unlike die-cast connectors, machined brass connectors have more precise tolerances, strength and positive mating meaning low signal loss for precise video and data applications.
• Boot is molded to cable connector for added strength
• 95% shielding
• 80°F temperature rating
• Multiple lengths up to 100 feet
• Individually bagged

TT53P Class 5.2 Intl. TDG Label (Paper) by GHS Safety

Shipping Labels are essential for packages that contain dangerous goods. GHS labels are available in two materials. Paper for indoor applications and in vinyl for extended outdoor usage using a fade resistant ink. These labels meet the UN Recommendations on the Transport of Dangerous Goods.

Available in 500/roll formats.