$20 - $25

480064 Test Strips: Iodine Check 0-300 ppm by AquaPhoenix

WaterWorks Iodine Check, 0-300 ppm, Bottle of 50, A high range of concentrations can be measured with the WaterWorks Iodine water quality test strip. Accurate results from 0 to 300 ppm (mg/L) are obtained quickly, making the new Iodine water quality test strip ideal for the food and medical industries, as well as water treatment use. Total Test Time: 32 Seconds, Sensitivity: 0, 5, 10, 15, 20, 30, 40, 50, 75, 100, 150, 200, 250, 300 ppm (mg/L)

GHS1013 SDS Binders with A-Z Dividers, English/Spanish by GHS Safety

Organize and access your Safety Data Sheets quickly and easily with Safety Data Sheet Binders. All binders are manufactured with a thick stiff and rigid vinyl protected cover. This makes binder easy to use, durable, and prevents it from collapsing and crushing its contents over extended usage. Each binder also comes with sturdy A-Z alphabetical reinforced dividers to sort and organize your Safety Data Sheets.

The regular size binders come with a standard 1-1/2" D-slant format ring, holding 300 pages. Printed with bright graphics, these binders will be highly visible in your workplace.

Also available in English and English/French

English / Spanish

94221 EclipSmart Solar Filter for 70mm Refractor by Celestron

Get ready for the 2017 total solar eclipse with EclipSmart Solar Safe Products.

Enhance your viewing experience with Celestron's EclipSmart Solar Filter for the PowerSeeker 70 AZ & EQ. With three Nylon safety screws to adhere the device to your telescope, you can be assured that the solar filter will not fall off and will provide Solar Safe, ISO compliant viewing.

• Instantly transform your normal PowerSeeker 70 (AZ & EQ) and Travel Scope 70 telescope into a white-light solar telescope
• Solar film produced in the USA by American Paper Optics, one of the suppliers recommended by NASA for safe solar viewing
• ISO Certified - proprietary Solar Safe material allows you to safely view the August 21, 2017 North American total solar eclipse
• Designed from the telescope's lens cap for a snug, safe fit via 3 safety screws. Safety cap protects outer surface of filter when not in use

Solar Safe Technology

EclipSmart solar products feature Solar Safe filter technology providing the ultimate protection from harmful solar radiation, including both IR and UV light, and filters 99.999% of intense visible light. Celestron Solar Safe filter technology is GUARANTEED SAFE for direct solar observation and has been independently tested by SAI Global Assurance Services.

Solar Safe products conform to and meet the transmission requirements of ISO 12312-2, Filters for Direct Observation of the Sun, EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and, AS/NZS 1338.1:2012, Filters for Eye Protectors.

AI1129-L pH 11.00 Calibration Buffer Solution 16oz by Apera

The Apera Instruments pH 11.00 Calibration Buffer Solution is standardized against NIST certified pH references within 0.01 pH at 25°C (77°F). It's ideal for the calibration of pH meters that have customized calibration functions (e.g. Apera PH800, PH820, SX811).

pH value is affected by temperature variations. A temperature/pH reference chart is provided on the bottle label for reference.

All the solutions are double-sealed, not subject to the DOT shipping restrictions, and have a 2-year shelf life. The expiration date is printed on the bottle. MSDS documents are downloadable.

Note: Store at room temperature and away from direct sunlight. Keep the bottle tightly closed when not in use. Keep out of reach of children.

• High Accuracy (±0.01 pH): standardized against NIST certified pH references within 0.01 pH at 25°C (77°F).
• Ideal for the calibration of all kinds of pH meters/testers
• Double-sealed, 2-Year shelf life
• Expiration date and Temperature/pH reference chart provided for reference
• Non-hazardous product (MSDS is downloadable)

Shutter Mounting Hardware Kit

FLT235 4.92' Stainless Float Switch 50W, 400mm Leads Adjustable by Chicago Sensor

• Versatile, adjustable stainless steel liquid level sensor.
• UL Listed internal reed switch.
• Normally closed; float can be removed, inverted and replaced for normally open operation.
• M10 stem threading each switch comes with a nut and silicon o-ring.
• Warranted against manufacturer defect for 180 days from delivery date.

59-300-1M RG59/U, BNC Male to BNC Male, 25 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

94252 EclipSmart Solar Filter for StarSense Explorer LT 80AZ Telescopes by Celestron

Turn your Celestron StarSense Explorer LT 80AZ or ExploraScope 80AZ telescope into a solar scope! The EclipSmart Eclipse Solar Filter is a must-have accessory perfect for viewing the Sun and eclipses like the upcoming 2023 Annular Solar Eclipse and 2024 Total Solar Eclipse. Affordable, easy to use, and best of all, all Celestron EclipSmart products conform to the ISO 12312-2:2015(E) international safety standard. This solar filter is custom designed for the StarSense Explorer LT 80AZ and ExploraScope 80AZ telescopes. Three safety screws securely hold the filter in place for a safe, snug fit.

Solar Safe Technology

EclipSmart solar products feature Solar Safe filter technology–the ultimate protection from harmful solar radiation, including IR and UV light, plus 99.999% of visible light. Celestron Solar Safe filter technology is SAFE for direct observation of the Sun and has been independently tested to conform to and meet the transmission requirements of ISO 12312-2:2015(E), Filters for Direct Observation of the Sun, EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and AS/NZS 1338.1:2012, Filters for Eye Protectors.

Important safety note: inspect your filter before every use. Do not use and discard if damaged, torn, punctured, or separated from the frame in any way.

• SOLAR SAFE TELESCOPE FILTER: Filter conforms to the ISO 12312-2:2015(E) international safety standard for filters directly viewing the Sun. The ideal tool for viewing eclipses, sunspots, or the Sun any day!
• WORKS WITH YOUR EXISTING TELESCOPE: Compatible with Celestron StarSense Explorer LT 80AZ and ExploraScope 80AZ telescopes.
• SAFE, SNUG FIT: Three safety screws keep your filter securely attached to your telescope's objective. A safety cap protects outer surface of filter when not in use.
• SOLAR FILM MADE IN THE USA: Our Solar Safe film is produced in the USA by American Paper Optics, one of the suppliers recommended by NASA for safe solar viewing.
• GREAT VIEWS AND IMAGES: This filter features an orange tint, producing a natural look perfect for visual observing and capturing images through your telescope.