$25 - $50

C-7004 Nitrite Comparator (flat) by AquaPhoenix

The C-7004 Flat Nitrite Comparator is a component of K-7004, K-7020B, and K-7020C nitrite test kits. It is designed to be compared against the color formed in R-7002 Nitrite/Nitrate CHEMets® Refill. The comparator's range is applicable for many industrial and environmental water quality applications. The color standards contain red-orange dye mixtures that are formulated to match the colors produced by the test ampoules.

71233 UpClose G2 10x25 Roof Binocular (Clam Shell) by Celestron

• High quality binoculars at an affordable / economical price
• Multi-coated optics increase light transmission resulting in brighter and sharper images with high contrast levels
• Stylish rubber covered aluminum body protects from rough handling
• Ergonomic thumb indents and finger ridges for extra non-slip comfort and ease of use
• Water resistant
• Soft carrying case
• Binocular straps

Perfect For:

• Bird Watching
• Sporting Events
• Nature & Wildlife
• Hunting
• Travel & ventures
• Concerts & live events
• Boating

93661 SCT to 2" Visual Back Adapter by Celestron

This sturdy, high-quality adapter provides a solid connection between your Schmidt-Cassegrain or Maksutov-Cassegrain telescope and 2" accessories without any special threaded 2" diagonal. This accessory makes it possible to maximize your views through your telescope with your standard 2" diagonal, eyepieces, and other accessories (like photo adapters) allowing you to connect a camera for astroimaging.

The adapter offers an ultra-secure threaded connection to your telescope. On the other side, a brass compression ring provides a strong grip on eyepieces accessories without scratching or denting their barrels. To tighten the ring around the accessory, just adjust the set screw.

With its precision machined aluminum construction and black anodized finish, this adapter will resist corrosion and wear, providing you with years of use. The black interior also reduces the internal light reflections, enhancing your view.

• Replace your 1.25" visual back with this SCT to 2" Adapter and enjoy stunning views through 2" eyepieces and other accessories
• Internal threads provide a secure connection to the rear cell of most Schmidt-Cassegrain or Maksutov-Cassegrain telescopes
• Brass compression ring holds 2" eyepieces or diagonals tightly without scratching their barrels
• Use with photo adapters to attach imaging cameras to the rear of your Schmidt or Maksutov telescope
• Features a durable, anodized black aluminum housing

94253 EclipSmart Solar Filter for 5" Schmidt-Cassegrain Telescopes by Celestron

Turn your Celestron 5" Schmidt-Cassegrain 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 Celestron 5" Schmidt-Cassegrain telescopes. Two hook and loop straps securely hold the filter in place for a safe, snug fit.

Compatible Telescopes:

• NexStar 5SE
• Popular Science by Celestron StarSense Explorer 5"
• C5 Spotting Scope
• StarSense Explorer 5" Schmidt-Cassegrain – International Exclusive
• Astro Fi 5" Schmidt-Cassegrain – International Exclusive

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 5" Schmidt-Cassegrain telescopes.
• SAFE, SNUG FIT: Two hook and loop straps keep your filter securely attached to your telescope's objective.
• 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.

CY-7500-P Cylinder, Plastic 500mL by AquaPhoenix

Easily dispense liquids with the generous pour spouts on Thermo Scientific™ Nalgene™ PMP Economy Graduated Cylinders. These clear polymethylpentene cylinders exhibit good chemical and impact resistance and include easy to read molded-in graduations that won't rub off

18526-09 Type J Economic Handle Thermocouple Probe with Mini-Connector, 12" L, 36" E x t FEP .188 Dia, Grounded by Digi-Sense

The temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C).

• Each probe comes with a 3/16" diameter shaft, 36" long FEP extension cable and handle
• Available in grounded or ungrounded junctions.
• Response Time: 2-4 seconds or greater
• Each probe comes with a color coded ANSI mini connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request

18526-38 Type K Economic Bolt On Thermocouple Probe #6 Screw with Mini-Connector, 36" Fiberglass Ext. Grounded by Digi-Sense

The temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C).

• Available in #6 (M3.5) or #8 (M4) screw sizes and different lead lenghts
• Response Time: 2-4 seconds or greater
• Each probe comes with a color coded ANSI mini connector or stripped leads: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request

EC-3 Electrical Conductivity Tester (HM Digital) by AquaPhoenix

With its rugged design and build, the EC-3 is an ideal meter (tool) that can be used for any application; Ranging from water purification, to hydroponics to industrial waste water treatment. It comes with a black vinyl carrying case, protecting it when carried in a toolbox.

K-4585 Total Hardness Titrets® Test Kit (100-1000 ppm) by AquaPhoenix

Increments: 100, 110, 120, 130, 140, 150, 160, 180, 200, 250, 300, 350, 400, 500, 700, 1000 ppm CaCO3

Features of Titrets Technology:

• Dependable, sealed single-use titrants
• Fast, easy procedure -- no need to count drops
• No burettes or other equipment necessary
• Perform a titration ANYWHERE

K-7370S COD Vials, 0-15,000 ppm (HR+) Not USEPA Approved, 25 vials by AquaPhoenix

All COD Kits require the use of a Digestor Block and the V-2000 Photometer, an A-7325 COD Photometer, or a spectrophotometer capable of accepting a 16 mm round cell. Photometers sold separately. A digestor block is no longer available from CHEMetrics.

A fresh reagent ampoule blank must be prepared for each series of tests; therefore the number of samples that can be tested with each kit will vary.

K-9650 Sulfite Titrets® Test Kit (50-500 ppm) by AquaPhoenix

Increments: 50, 55, 60, 65, 70, 75, 80, 90, 100, 125, 150, 175, 200, 250, 350, 500 ppm

Features of Titrets Technology:

• Dependable, sealed single-use titrants
• Fast, easy procedure -- no need to count drops
• No burettes or other equipment necessary
• Perform a titration ANYWHERE