$50 - $75

Part Number: P197125LM2

TDS1500/G Conductivity Solution, 1500ppm/2060uS, 1 Gal. 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)

7451 Intrinsically Safe Dual-Light, Black, 120 Lumens, 3AA by Western Technology

The 7451 LED Black Dual-Light is both a spot and flood light. This is the most versatile water-proof dual-light available on the market with sharp focused beam, an unfocused wide-beam and a run time of 17.5 hours.

Features

• LED Flashlight - CREE LED technology - 50,000+ hours LED life
• Run Time: 17.5 hours
• Projection distance: 170m beam distance
• Engineered polymer housing
• 120 Lumens
• 7250cd
• Floodlight, spotlight, and dual light (both flood and spot at the same time) modes for maximum versatility
• Water-proof
• Momentary or constant-on flashlight
• Sharp focused beam for distance illumination
• Unfocused wide-beam floodlight for close-up illumination
• Available colors: yellow, black

Part Number: P197150LM15

GHS1278VY Workplace Laser Labels, Red Border, Vinyl (8.5" x 11") by GHS Safety

GHS laser printer templates make it easy for you to make your own label for the new HazCom GHS requirements. These paper laser printer ready sheets come with a pre-printed red boarder and pre-cut labels. Use any desktop publishing package to quickly make your own professional looking labels.

Made from laser printable paper with permanent peel and stick backing. If color printing is not an option, use Hazard Class and Personal Protective Equipment labels (sold separately) to complete your labels.

1 label per sheet Sold in packages of 100 sheets

94016 Dew Shield DX for C9.25 & C11 by Celestron

The Celestron Dew Shield DX is an essential accessory that protects your optical tube in the field. It prevents excess moisture in the air from forming condensation on the corrector lens. A dew shield also helps block stray light from entering the telescope for better viewing and astroimaging. Use the Dew Shield DX on your 9.25" and 11" Schmidt Cassegrain, EdgeHD, and RASA (with single dovetail) optical tubes with confidence.

Construction

The Dew Shield DX provides a perfect, custom fit designed specifically for 9.25" and 11" Celestron optical tubes. The Dew Shield is built from durable PE plastic that is flexible but strong. Extra padding has been added at the tube attachment edge to create a stronger fit on the optical tube. The felt-lined interior absorbs any additional stray light and excessive moisture, creating optimal contrast when viewing and imaging. The large dovetail cutout has been made both wider- to accommodate a 4" wide dovetail rails, as well as deeper, to create a more solid connection with the optical tube.

Attaching the Dew Shield to your optical tube is easy thanks to the Velcro attachment points. Whether your optical tube is 9.25" and 11", simply adjust the Velcro for the correct fit.

Transportation and Storage

To save space when not in use, roll up your Dew Shield DX for easy transport and storage.

• Prevents dew from forming on your Schmidt-Cassegrain or EdgeHD corrector lens
• Fits 9.25" and 11" optical tubes
• Cutout accommodates telescope dovetail rails
• Felt-lined interior surface captures moisture and reduces stray light
• Rolls up for easy transport

650 ORP Tester Personal Pocket Pen by Jenco

ORP Tester personal pocket pen style with gain adjust by trimmer. 4 x 1.5 V Batteries.

• Gain adjust

*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

Old Part Number: P1055500
New Part Number: P1055500PA

Part Number: P1016500PM3

UCC Case (Soft) for Myron L Digital Meters by AquaPhoenix

Soft protective, nylon padded case with zipper and belt clip for Myron L digital meters.