$200 - $300

72335 Nature DX 10x50 ED Binocular by Celestron

Celestron's award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. Nature DX ED's optical performance rivals that of more expensive binoculars, at a price to fit your budget.

Generous 50mm objective lenses gather lots of light, making these binoculars an ideal choice when viewing conditions are dim, such as at dawn or dusk. With 10x magnification, this model is an excellent choice for long distance viewing or surveillance.

• Extra-Low Dispersion (ED) objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration (color fringing)
• Fully multi-coated optics deliver maximum light transmission through the optical path
• Phase coated BaK-4 prisms produce vivid, true-to-life colors
• Eyeglass friendly - generous eye relief and sturdy, twist-up eyecups with multiple stops
• 8.2' close focus
• Tripod adaptable

ED Objective Lenses

Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as color fringing, a visual defect common in binoculars. Nature DX ED delivers razor sharp images, even at the edges of the field of view. ED glass is also known for producing images with outstanding, true-to-life color.

Not all ED glass is created equal. Celestron's high quality ED glass delivers visibly brighter, sharper images compared to non-ED binoculars. The difference is especially apparent in low light conditions, such as at dawn or dusk.

Coatings and Prisms

Nature DX ED features fully multi-coated optics. A binocular can be considered "fully multi-coated" when all air-to-glass surfaces are coated with multiple layers of anti-reflectivity coatings so that the maximum amount of light passes through the glass to the eye.

The prisms inside Nature DX ED are made of high quality BaK-4 glass with phase coatings applied so that more light is reflected off their internal faces and passes through to the eye.

Taken together, the fully multi-coated lenses and BaK-4 prisms maximize light transmission for the remarkably bright, highly detailed images. The ED objective lenses further enhance these features, especially in low light conditions.

The Body

A durable rubber armored, polycarbonate housing protects your Nature DX ED binoculars from damage without weighing you down. Viewing through Nature DX ED is comfortable for both eyeglass wearers and non-eyeglass wearers, thanks to the durable twist-up eyecups. Twist through multiple click stops to find the position that works best for you. What's more, the binocular is fully waterproof and filled with dry nitrogen gas to prevent internal fogging of lenses. Nature DX ED can stand up to even the toughest outdoor conditions.

Perfect for a Variety of Uses

The Nature DX ED 10x50 offers 10x magnification, perfect for up-close views of distant subjects. The 50mm objective lenses are large enough to gather lots of light, while still being lightweight enough to use without a tripod. Of course, the binoculars are also tripod-adaptable (adapter sold separately) for extended viewing sessions or digiscoping (photography through the eyepiece).

Ways to Observe

Carry your Nature ED on the comfortable included strap. It's also tripod-adaptable, so you can mount it on any standard photographic tripod for extended viewing or digiscoping (photography through the eyepiece). The tripod adapter is sold separately. The binocular also includes a protective padded nylon case for storage and transport.

72336 Nature DX 12x50 ED Binocular by Celestron

Celestron's award-winning Nature DX binocular gets a major upgrade with the addition of ED objective lenses. Nature DX ED's optical performance rivals that of more expensive binoculars, at a price to fit your budget.

Generous 50mm objective lenses gather lots of light, making these binoculars an ideal choice when viewing conditions are dim, such as at dawn or dusk. With 12x magnification, this model is an excellent choice for long distance viewing or surveillance.

• Extra-Low Dispersion (ED) objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration (color fringing)
• Fully multi-coated optics deliver maximum light transmission through the optical path
• Phase coated BaK-4 prisms produce vivid, true-to-life colors
• Eyeglass friendly - generous eye relief and sturdy, twist-up eyecups with multiple stops
• 8.2' close focus
• Tripod adaptable

ED Objective Lenses

Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as color fringing, a visual defect common in binoculars. Nature DX ED delivers razor sharp images, even at the edges of the field of view. ED glass is also known for producing images with outstanding, true-to-life color.

Not all ED glass is created equal. Celestron's high quality ED glass delivers visibly brighter, sharper images compared to non-ED binoculars. The difference is especially apparent in low light conditions, such as at dawn or dusk.

Coatings and Prisms

Nature DX ED features fully multi-coated optics. A binocular can be considered "fully multi-coated" when all air-to-glass surfaces are coated with multiple layers of anti-reflectivity coatings so that the maximum amount of light passes through the glass to the eye.

The prisms inside Nature DX ED are made of high quality BaK-4 glass with phase coatings applied so that more light is reflected off their internal faces and passes through to the eye.

Taken together, the fully multi-coated lenses and BaK-4 prisms maximize light transmission for the remarkably bright, highly detailed images. The ED objective lenses further enhance these features, especially in low light conditions.

The Body

A durable rubber armored, polycarbonate housing protects your Nature DX ED binoculars from damage without weighing you down. Viewing through Nature DX ED is comfortable for both eyeglass wearers and non-eyeglass wearers, thanks to the durable twist-up eyecups. Twist through multiple click stops to find the position that works best for you. What's more, the binocular is fully waterproof and filled with dry nitrogen gas to prevent internal fogging of lenses. Nature DX ED can stand up to even the toughest outdoor conditions.

Perfect for Distance Viewing

The Nature DX ED 12x50 offers 12x magnification, perfect for up-close views of distant subjects. The 50mm objective lenses are large enough to gather lots of light, while still being lightweight enough to use without a tripod. Of course, the binoculars are also tripod-adaptable (adapter sold separately) for extended viewing sessions or digiscoping (photography through the eyepiece).

Ways to Observe

Carry your Nature ED on the comfortable included strap. It's also tripod-adaptable, so you can mount it on any standard photographic tripod for extended viewing or digiscoping (photography through the eyepiece). The tripod adapter is sold separately. The binocular also includes a protective padded nylon case for storage and transport.

Part Number: F105350PM4

Part Number: M197120LM5

WD-06754-01 pHTestr® 30 Waterproof Pocket Tester and Buffer Pack Bundle by Oakton

The Oakton® pHTestr® 30 is great for outdoor applications - take pH measurements in lakes and streams. Designed to be waterproof and float in water, you can even attach a line to the housing for easy retrieval.

The replaceable sensor ensures easy maintenance, and the double-junction electrode handles wastewater, sulfides, heavy metals, and TRIS. The glass pH bulb is recessed to protect against breakage.

The keypad clicks to confirm operation, and allows access to a variety of functions. Calibrate up to three pH points with auto-buffer recognition. Additional features include automatic temperature compensation (ATC), hold function, auto-off function, self-diagnostic error messages, and a three-segment battery-life indicator.

The most common pH calibration buffers are also included! Maintain accuracy throughout the meter's range.

• All Oakton pH buffers are traceable to NIST standard reference materials
• Buffer solution lets you calibrate any pH instrument to ensure accuracy
• Makes calibration easy - simply adjust your instrument to the pH value of the solution
• If unopened, shelf life is 2 years; once opened, use pH 4 and pH 7 within 90 days, pH 10 within 30 days
• Store buffers away from direct sunlight.
• Buffer solutions are color coded for quick visual reference: pH 4.01 buffer in red, pH 7.00 buffer in yellow, pH 10.01 buffer in blue

To obtain a Certificate of Analysis on each buffer within the pack, please visit each individual items' page and enter the lot number in the space provided. For example, type part number 00654-00 into the search box at the top web page, then scroll down on the page to the CERTIFICATE OF ANALYSIS box, and enter the lot number in the space provided.

Versatile, compact meter works in a field or laboratory setting - includes buffer for convenience and savings.

Key Features

• Handheld meter provides 0.01 pH accuracy and dual-line display for simultaneous pH and temperature readout
• Replaceable, double-junction electrode sensors save time and money
• IP67-rated (waterproof) housing sits flat on the table and floats in water
• Bundled for convenience and to save you money!

Includes

protective plastic storage case, lanyard, and batteries (installed). Buffer solution pack includes: one 500-mL bottle of each pH 4.01, 7.00, and 10.01.

7409 USB Rechargeable Flashlight LED, Multi-function TEN-TAP 850 Lumen 6.5" Pocket Clip and Holster by Western Technology

The Model 7409 - USB Rechargeable LED Flashlight is a high lumen tactical light that is USB rechargeable, so you can charge on-the-go using almost any USB source. It also accepts multiple battery sources to use as a back up so you'll always have power when you need it.

Model 7409 - USB Rechargeable LED Flashlight is a versatile tactical light that can charge from multiple sources. It uses three battery types: a rechargeable lithium ion battery, two CR123A batteries, or commercially available rechargeable Li-Ion cells. This light will charge from a laptop or most USB wall chargers. Multi battery versatility means you can always use primary disposable cells to power the light when a charging source is not available. Designed for use in all markets, it features a tail cap switch for momentary or constant on operation, three different user selectable programs and a pocket clip for convenience. The aluminum housing with Type II Military Spec anodizing helps make the light extremely durable and abrasion resistant. Packaged with a removable pocket clip and holster. Available in Black.

Measuring Range: -13 to 248°F

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

S200C/BNC pH Sensor, 12mm, Polymer, 1M, BNC by Sensorex

The Sensorex S200C is one of our most popular laboratory pH electrodes, due to its reliability and low maintenance design. The pH1600 replaces the S200C/BNC pH probe and has the same design, but features a new Ultem® body for superior chemical compatibility. This pH probe performs to the same specifications compared to the Sensorex S200C and is instantly ready for use as a direct fit replacement.

• New Sensorex S200C
• Durable and chemically compatible Ultem® or body
• Reliable and accurate over the full range of pH measurements
• No refilling or maintenance required with sealed gel-filled design
• Instantly ready for use, and has one year guaranteed shelf life
• One year limited warranty

Part Number: 58L-465