$15 - $20

C-6001 Iron Comparator (round) by AquaPhoenix

C-6001 Iron Comparator is a component of K-6210 Iron (total & ferrous) CHEMets Visual Test Kit and K-6010 Iron (total & soluble) CHEMets Visual Kit is designed to be compared against the color formed in R-6201 Iron CHEMets Refill and R-6001 Iron CHEMets Refill. The comparator's range is applicable to many applications including surface and industrial process waters. Color standards are orange in color and cover a range of 0-1 ppm iron (Fe).

C-6002 Iron in Brine Comparator (round) by AquaPhoenix

C-6002 Low Range Iron in Brine Comparator is a component of K-6002 Iron in Brine CHEMets Visual Test Kit and is designed to be compared against the color formed in R-6002 Iron in Brine CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are orange in color and cover a range of 0-100 mg/L.

C-6502 Manganese Comparator (round) by AquaPhoenix

C-6502 Manganese Comparator is a component of K-6502 Manganese CHEMets Visual Test Kit and is designed to be compared against the color formed in R-6502 Manganese CHEMets Refill. The comparator's range is applicable to many industrial and drinking water applications. Color standards are pink in color and cover a range of 0-2 mg/L manganese (Mn).

C-7006 Nitrite Comparator (round) by AquaPhoenix

C-7006 Nitrite Low Range Comparator is a component of K-7006 Nitrite CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7006 Nitrite CHEMets Refill. The comparator's range is applicable to many industrial and environmental applications. Color standards are pink in color and cover a range of 0-0.10 mg/L nitrite (as nitrogen).

C-7404 Ozone Comparator (round) by AquaPhoenix

C-7404 Round Ozone Comparator is a component of K-7404 Ozone CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7404 Ozone/Chlorine Dioxide CHEMets Refill. The comparator's range is applicable to many drinking water applications. Color standards are pink in color and cover a range of 0-0.60 mg/L Ozone.

C-7518 Oxygen Comparator (round) by AquaPhoenix

C-7518 Dissolved Oxygen Comparator is a component of K-7518 Dissolved Oxygen CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7512 Dissolved Oxygen CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are pink in color and cover a range of 5-180 ppb Oxygen.

C-7540 Oxygen Comparator (round) by AquaPhoenix

C-7540 Dissolved Oxygen Comparator is a component of K-7540 Dissolved Oxygen CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7540 Dissolved Oxygen CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are pink in color and cover a range of 0-40 ppb Oxygen.

C-7599 Oxygen Comparator (round) by AquaPhoenix

C-7599 Dissolved Oxygen Comparator is a component of K-7599 Dissolved Oxygen CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7540 Dissolved Oxygen CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are pink in color and cover a range of 0-100 ppb Oxygen.

C-7807 Sodium Persulfate Comparator (round) by AquaPhoenix

C-7807 Low Range Persulfate Comparator is a component of K-7870 Persulfate CHEMets Visual Test Kit and is designed to be compared against the color formed in R-5510 Hydrogen Peroxide/Persulfate CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are orange in color and cover a range of 0-5.6 ppm sodium persulfate.

C-7902 Peracetic Acid Comparator (round) by AquaPhoenix

C-7902 Low Range Peracetic Acid Comparator is a component of K-7904 Peracetic Acid CHEMets Visual Test Kit and is designed to be compared against the color formed in R-7904 Peracetic Acid CHEMets Refill. The comparator's range is applicable to many disinfection applications. Color standards are pink in color and cover a range of 0-1 ppm peracetic acid.

C-8001 Phenols Comparator (round) by AquaPhoenix

C-8001 Low Range Phenols Comparator is a component of K-8012 Phenols CHEMets Visual Test Kit and is designed to be compared against the color formed in R-8012 Phenols CHEMets Refill. The comparator's range is applicable to many wastewater and disinfection applications. Color standards are pink to red in color and cover a range of 0-1.0 ppm phenols.

C-8501 Phosphate Comparator (round) by AquaPhoenix

C-8501 Low Range Phosphate, ortho Comparator is a component of K-8510 Phosphate,ortho CHEMets Visual Test Kit and is designed to be compared against the color formed in R-8510 Phosphate, ortho CHEMets Refill. The comparator's range is applicable to many environmental and water treatment applications. Color standards are blue in color and cover a range of 0-1.0 ppm PO4.

C-8530 Phosphate Comparator (round) by AquaPhoenix

C-8530 Phosphate, ortho Comparator is a component of K-8530 Phosphate, ortho CHEMets Visual Test Kit and is designed to be compared against the color formed in R-8515 Phosphate CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are yellow in color and cover a range of 2-30 ppm PO4.

C-9001 Silica Comparator (round) by AquaPhoenix

C-9001 Low Range Silica Comparator is a component of K-9010 Silica CHEMets Visual Test Kit and is designed to be compared against the color formed in R-9010 Silica CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are blue in color and cover a range of 0-1.0 ppm SiO2.

C-9400 Detergents Comparator (round) by AquaPhoenix

C-9400 Detergents Comparator is a component of K-9400 Detergents (anionic surfactants, MBAS) CHEMets Visual Test Kit and is designed to be compared against the color formed in R-9400 Detergents CHEMets Refill. The comparator's range is applicable to many disinfection and stormwater applications. Color standards are blue in color and cover a range of 0-3.0 ppm linear alkylbenzene sulfonate (LAS).

C-9501 Sulfide Comparator (round) by AquaPhoenix

C-9501 Round Sulfide Comparator is a component of K-9510 Sulfide CHEMets Visual Test Kit and is designed to be compared against the color formed in R-9510 Sulfide CHEMets Refill. The comparator's range is applicable to many industrial applications. Color standards are blue in color and cover a range of 0-1.0 ppm sulfide.

44401 Microscope Calibration Slide by Celestron

Ensure accurate readings from your microscope with the help of Celestron's Microscope Calibration Slide. Also known as a stage micrometer, the Celestron Microscope Calibration Slide is a standard 1" x 3" glass microscope slide that features an etched scale that is 1mm in total length and subdivided into 100 equal divisions.

The stage micrometer fits on your microscope's stage, allowing you to ensure your specimen measurements are correct. If you have a digital microscope and or a traditional microscope with a digital imager attachment, a stage micrometer is essential for calibrating the microscope's software settings. You can also use the stage micrometer to manually measure specimens that are 1/100th of a millimeter or larger, such as microfibers. If you have a non-digital microscope (e.g., Celestron Labs), you can use the stage micrometer to calibrate the microscope's eyepiece reticles and determine the field of view of different objective lens and eyepiece pairings. If you find yourself changing objectives and eyepiece reticles often, using your calibration slide regularly will help you maintain measuring accuracy.

Compatible Microscopes

The stage micrometer works with a wide range of Celestron microscopes and imagers to measure specimens or determine your microscope's field of view.

• Precise stage micrometer glass slide for calibrating your microscope's camera or imager
• 1mm ruler with 100 subdivisions to accurately measure specimens as small as 0.01mm
• Standard 1"x3" slide fits easily on a traditional microscope stage

44428 EclipSmart Universal Solar Filter by Celestron

Turn your telescope, spotting scope, or DSLR camera into a solar scope! The EclipSmart Universal 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, Solar Safe, this filter conforms to the ISO 12312-2:2015(E) international safety standard. The EclipSmart Universal Solar Filter has a solar filter aperture of 60mm and works with any optic or lens measuring 75 to 100 mm in diameter, including telescopes, spotting scopes, and DSLR camera lenses. The solar filter fits around your optical device with adjustable side panels that secure with a rubber band for a snug fit. We include (2) rubber bands, but we recommend that you change out the bands frequently. To replace use #32 rubber bands. When it's not in use, fold the filter flat and place it inside the reusable bag.

If you plan to use this filter with your DSLR camera, we recommend adding a sunshade to the camera lens. This will expand the lens diameter and allow for a more secure attachment to the filter using the rubber bands. We also recommend using a tripod, monopod, or other stabilizing device with your camera setup. You can use your camera and filter intermittently over extended periods of up to several hours, but do not point your camera and filter directly at the Sun for more than three continuous minutes.

Never use this filter if your camera has an optical viewfinder. If you are uncertain about the type of viewfinder on your camera, do not use this filter. Always ensure that the filter is placed directly onto the camera lens during imaging, never between the viewfinder and your eye.

If you would like to use tape to secure the filter to your optic, Celestron recommends low-tack painter's tape to prevent any potential damage to your optic.

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, SPOTTING SCOPE, OR DSLR CAMERA: Compatible with objective lenses with an outside diameter of 75mm to 100mm.
• SAFE, SNUG FIT: To use, adjust the side panels to fit the filter on your optical device and attach the rubber band for a secure fit.
• COMPACT AND PORTABLE: Filter folds flat for storage in its reusable bag 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 scope or camera.

71213 UpClose G2 10x25 Roof Monocular by Celestron

• High quality monocular 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

81035 Basic Phone Adapter, 1.25" by Celestron

Capture and share your observations through just about any optic with this handy, simple-to-use smartphone adapter. Whether you're snapping an Instagram-worthy image of the Moon, sharing your latest wildlife sightings with a binocular or spotting scope, or preserving lab specimens with your microscope, this versatile adapter handles it all with ease.

No matter which optic you choose, installing and using the adapter is hassle-free. First, place your phone in the adapter. It's held securely in position with the help of tightening knobs that lock your phone in place. Next, align the phone's camera with the center of the eyepiece. Once you've determined the perfect position, clamp the adapter over the top of the eyepiece and use the knobs to adjust for a secure fit.

Note: Some large and/or bulky phone cases (including folio style cases) may need to be removed for the phone to fit in the adapter.

Once the phone is mounted over the eyepiece, you can capture still images or video, plus access all the rest of your phone's features. You can even text your photos to a friend or post them on social media while your phone is still mounted in the adapter.

To determine if your optic is compatible with the Basic Smartphone Adapter, simply measure the outside diameter of your eyepiece. If it falls within the 29mm to 45mm range, you may use it with this adapter. The adapter does not work with riflescopes.

• This smartphone adapter connects your smartphone to a telescope, binocular, spotting scope, or microscope, so you can capture images and video through the eyepiece.
• Works with most smartphone devices.
• Compatible with most telescope eyepieces and any eyepiece with an outside diameter measuring from 29mm to 45mm.
• Simple to use! Place your phone in the adapter, center your phone's camera over the eyepiece, and use the knobs to secure the adapter in place.
• Durable, metal bodied adapter stands up to rigorous use in the field and harsh weather conditions.

93402 T-Ring for Nikon Camera by Celestron

A T-Ring is one of the first accessories you will need if you want to take pictures through a telescope or spotting scope. If you have a Nikon SLR or DSLR camera body, the Celestron Nikon T-Ring is the one for you.

In order to use the Nikon T-Ring, remove the lens from your camera, and attach the T-ring in its place, just as you would if you were mounting a lens. The telescope side of the t-ring has threads that will accept a variety of camera adapters, including the Celestron T-Adapter or Tele-Extender. The adapter you choose depends on the type of photography you wish to do.

You can take pictures of terrestrial and/or celestial scenes by using a simple T-Adapter to turn your telescope or spotting scope into a large telephoto lens. The #93633-A T-Adapter is the best choice if you own a Schmidt-Cassegrain telescope with standard rear cell threads. If you have a refractor, the Universal T-Adapter (#93625), with its 1-1/4" barrel insert, is available. There are also special T-Adapters for the EdgeHD optical system: one for the 8-inch EdgeHD (#93644) and one for the 9.25, 11, and 14-inch EdgeHD (#93646).

Prime focus photography is popular for short exposure images of terrestrial objects as well as celestial objects like the Moon.

If you need extra magnification beyond that which your Schmidt-Cassegrain telescope provides, a Tele-Extender (#93643) will allow you to insert an eyepiece inside the barrel before attaching it to the telescope. A Tele-Extender is used most often for high power images of the Moon and the planets.

• This Celestron T-Ring attaches to all Nikon SLR and DSLR camera bodies.
• Sturdy bayonet flange locks in place just like a lens, providing secure contact.
• Attaches to a variety of camera adapters and accessories via standard t-threads.

93419 T-Ring for Canon EOS Camera by Celestron

A T-Ring is one of the first accessories you will need if you want to take pictures through a telescope or spotting scope. If you have a Canon EOS camera body, the Celestron EOS T-Ring is the one for you.

To use the Canon EOS T-Ring, remove the lens from your camera, and attach the T-ring in its place, just as you would if you were mounting a lens. The telescope side of the t-ring has threads that will accept a variety of camera adapters, including the Celestron T-Adapter or Tele-Extender. The adapter you choose depends on the type of photography you wish to do.

You can take pictures of terrestrial and/or celestial scenes by using a simple T-Adapter to turn your telescope or spotting scope into a large telephoto lens. The #93633-A T-Adapter is the best choice if you own a Schmidt-Cassegrain telescope with standard rear cell threads. If you have a refractor, the Universal T-Adapter (#93625), with its 1-1/4" barrel insert, is available. There are also special T-Adapters for the EdgeHD optical system: one for the 8-inch EdgeHD (#93644) and one for the 9.25, 11, and 14-inch EdgeHD (#93646).

Prime focus photography is popular for short exposure images of terrestrial objects as well as celestial objects like the Moon.

If you need extra magnification beyond that which your Schmidt-Cassegrain telescope provides, a Tele-Extender (#93643) will allow you to insert an eyepiece inside the barrel before attaching it to the telescope. A Tele-Extender is used most often for high power images of the Moon and the planets.

• This Celestron T-Ring attaches to Canon EOS DSLR and SLR camera bodies.
• Sturdy bayonet flange locks in place just like a lens, providing secure contact.
• Attaches to a variety of camera adapters and accessories via standard T-threads.
• This T-ring fits EOS model cameras only. It will not work with other Canon camera bodies.

93524 Binocular Tripod Adapter by Celestron

This adapter allows you to mount your binocular (porro or roof) to a tripod for added stability and convenience.

93581 Night Vision Red Headlamp by Celestron

The disruptive glare of white light can ruin your stargazing experience in an instant. Steer clear of white light while still navigating your observing site safely with this astronomer's essential, the Night Vision Red Headlamp. Designed specifically to preserve your night vision, and powered by a long-lasting LED, this headlamp provides the perfect amount red-light illumination, ensuring comfortable stargazing sessions where you can see more detail in celestial objects by preserving your dark-adapted vision.

Using the Night Vision Red Headlamp is simple and intuitive. First, install (2) AAA batteries, and then adjust the headlamp strap for a comfortable and secure fit, so it sits snugly on your head. Next, adjust the lamp's pointing position up to 45° to direct the light exactly where you need it. Depending on the task at hand, the headlamp is equipped with two red brightness levels, a blinking light, and an SOS setting. You can walk around your observing site, read star charts, or even grab that eyepiece you left in your gear bag, all while preserving your night vision.

Rigorously tested to ensure reliability and longevity, the Celestron Night Vision Red Headlamp provides up to 100 hours of continuous illumination, when set to the low brightness setting. That means you can rely on your headlamp to accompany you through countless stargazing sessions, camping trips, and outdoor adventures without worrying about running out of power. And if you do run out of juice, simply pop in fresh batteries and keep going–no need to find a power source and wait to recharge via USB.

• Optimal Night Vision: A traditional white flashlight can ruin your night vision in an instant. Preserve your eyes' dark adaptation while navigating your environment safely with this red-only LED headlamp. It minimizes disruption and allows for extended stargazing sessions without eye strain.
• Hands-Free Convenience: Enjoy the freedom of hands-free illumination with this adjustable headlamp. It's perfect for setting up telescopes, handling star charts, and more.
• Multiple Light Modes: Seamlessly switch between two brightness levels, a blinking light, and an SOS setting.
• Comfortable Fit: The adjustable, ergonomic head strap provides a secure and comfortable fit, ideal for long nights under the stars. And with a 45° adjustable angle, you can direct the light where you want it.
• Long Battery Life: Powered by an efficient LED, this headlamp offers up to 100 hours of continuous use, ensuring reliable performance for all your adventures.
• Versatile and Portable: Perfect for astronomers, campers, and outdoor enthusiasts, this headlamp is a versatile, grab-and-go tool for a variety of nighttime activities.