$25 - $50

WayCool Evaporative Cooling Pads, Full Pad for 1/3 Hp o 4 Required Per 1/3 Hp Unit

TT43P Class 4.3 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.

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

90308-65 Irreversible 4-Point Horizontal Temperature Label, 300-331F/149-166C; 10/Pk by Digi-Sense

Labels are made up of a series of temperature-sensitive elements sealed between heat-resistant substrates with transparent windows. Each element changes color distinctly as its rated temperature is met or exceeded. The changes to the label are irreversible, providing a temperature history of the surface being monitored. The labels will not delaminate when removed, allowing them to be attached to an inspection report to serve as a permanent record. Ideal for use in the food, automotive, molding and metal working industries. Accuracy is ±1.8°F below 212°F and ±1°F above 212°F. Shelf life: 1 year after date of purchase.

• Used as a quick inspection tool that the product is in usable condition during the shipping and receiving process
• Save time and money due to costly recalls
• Self-adhesive design

10-135-04 Butadiene Colorimetric Gas Detection Tube, 0.5 - 5 ppmv (10 Tubes / Box) 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

K-1513 Ammonia Vacu-vials® (0-10.00 ppm & 0-150 ppm) by AquaPhoenix

The K-1513 Ammonia Vacu-vials® Test Kit (Nesslerization) comes in a cardboard box and contains everything needed to perform 30 tests: thirty Vacu-vials® ampoules, Stabilizer Solution, 25 mL sample cup, 3-mL syringe, ampoule blank, and instructions. Ammonia concentrations between 10 and 150 ppm can be determined using the 3-mL syringe and dilution instructions included.

This kit requires the use of the V-2000 or V-3000 Photometer, an A-2024 SAM Photometer, or a spectrophotometer capable of accepting a 13 mm diameter round cell. Instrument sold separately.

This test kit can be used to measure the concentration of ammonia in seawater or saltwater by using the A-1503 Accessory Solution Pack (sold separately).

K-1513 is offered as an alternative to the discontinued K-1503. K-1513 offers the same Nesslerization method, but with a modified testing procedure to allow for wider measuring range and longer shelf-life.

93618 M42 Spacer Kit by Celestron

To achieve the best astroimages, it is important to attain the proper back-focus distance for your camera relative to the telescope it is being used with. If the back-focus distance your camera consumes is not exact, the performance at the corners of full frame imaging sensors will suffer—stars will appear elongated and not as pinpoints.

Example: RASA 8 with a ZWO ASI 183 MC PRO camera

• Required back-focus distance for RASA 8 with included M42 camera adapter: 25mm
• Back-focus consumed by ZWO ASI 183 MC PRO camera: 17.5mm
• To achieve equal back-focus distance, a 7.5mm M42 spacer ring is required

Celestron's M42 Spacer Ring kit includes three different length spacer rings to achieve the proper back-focus distance with our popular Celestron optical tubes and T-thread camera adapters.

How to Use

Depending your method of astrophotography (DSLR or CCD/CMOS), there are two ways to use the M42 Spacer Ring. If you are using a DSLR, place the desired M42 Spacer Ring between your T-Ring and your T-Adapter for your optical tube. If you are using a CCD or CMOS camera, place the desired M42 Spacer Ring between the camera and the T-Adapter for your optical tube.

Body

The M42 Spacer Rings are machined aluminum black anodized. The internal surfaces are blackened and glare-threaded to provide the highest contrast. Each spacer ring has a knurled surface, providing a great gripping surface for threading/unthreading. The M42 Spacer Rings are compatible with M42 x 0.75 (T-thread) camera adapters.

• Adjusts back-focus between your camera and telescope for the best astroimaging results
• Kit includes 3 spacer rings of different lengths (7.5mm, 12mm, 30mm)
• Threads to your T-Ring and T-Adapter with standard male and female T-Threads

*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

A-0170 Pipettor Pack, 100 uL by AquaPhoenix

A-0170 is a micropipette that is used for sample dilution in some tests. This reusable pipettor dispenses 100 microliter (uL) volume. Single-use disposal pipettor tips (A-0171), are required and are sold separately.

*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

*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