$150 - $200

Part Number: F107910PM4

2668000 Nitrogen-Ammonia Reagent Set by AquaPhoenix

For determination of Ammonia Nitrogen by the Salicylate Method. Hach Method 8155.
Range: 0.01 - 0.50 mg/L NH3-N Sample Size: 10 mL.
Set contains: Ammonia Cyanurate Reagent Powder Pillows and Ammonia Salicylate Powder Pillows for 100 tests.

72323 Nature DX 10x42mm Roof Binoculars by Celestron

Celestron's award-winning Nature DX 10x42mm binoculars are the perfect companion for your next outdoor adventure. The views through Nature DX rival those of more expensive binoculars at a price to fit your budget.

This versatile, all-around binocular is an excellent choice for the trail, the stadium, the arena, or just about anywhere you want a close-up view of the action without sacrificing brightness or detail. It's an especially great companion for nature observation and bird watching, with phase-coated BaK-4 prisms and a close focus of just 6.5 feet.

Coatings and Prisms

Nature DX features fully multi-coated optics. A binocular is "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 consist of high-quality BaK-4 glass with phase coatings applied so that more light reflects 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 Body

A durable rubber armored polycarbonate housing protects your Nature DX binoculars from damage without weighing you down. Viewing through Nature DX is comfortable for eyeglass wearers and non-eyeglass wearers alike, 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 the lenses. Nature DX can stand up to even the harshest outdoor conditions.

Perfect for a Variety of Uses

The Nature DX 10x42mm offers 10x magnification, perfect for up-close views of distant subjects. Despite its higher magnification, this binocular maintains a close focus of just 6.5 feet, making it a great choice for viewing nearby birds, butterflies, plants, and more. The 10x42mm is a favorite among beginning and intermediate birders since birds are easier to locate and follow in its wide field of view. Take your passion for birding to the next level with Nature DX!

Ways to Observe

Carry your Nature DX with 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.

• Phase coated BaK-4 prisms produce vivid, true-to-life colors
• Fully multi-coated optics deliver maximum light transmission through the optical path
• Eyeglass friendly - generous eye relief and sturdy, twist-up eyecups with multiple stops
• 6.5' close focus
• Accepts an optional tripod adapter for extended viewing sessions

71331 Nature DX 10x32 Binocular by Celestron

Celestron's Nature DX 10x32 binoculars are the perfect companion for your next outdoor adventure. A great first step into the world of serious sport optics, the views through Nature DX rival those of more expensive binoculars, at a price to fit your budget.

With phase-coated BaK-4 prisms and fully multi-coated optics, Nature DX reveals image detail you won't find with other entry-level binoculars. And when you re off the trail, enjoy superb views of concerts, sporting events, and more.

• BaK-4 Prisms w/ Phase Coating: Increases contrast and resolution for sharper more detailed images.
• Fully Multi-Coated Optics: Allows maximum light transmission through the optical path for brighter images.
• 6.5' Close Focus: Detailed, up close observation of subjects in close proximity. Ideal for watching birds, insects, plants, etc.
• Compact and Lightweight: Fits in a pocket or glove box. Easy to carry on long excursions.
• Twist-up Eyecups: Twist up and down with multiple stops for correct positioning of the users eyes for comfortable viewing with or without eyeglasses.
• Polycarbonate frame: Strong and durable polycarbonate body. Provides structural integrity while keeping the weight to a minimum.

Sophisticated optics

Nature DX's high quality BaK-4 prisms are phase coated to increase contrast and resolution. Phase coated prisms, combined with fully multi-coated lenses, provide maximum light transmission through the entire optical path, for brighter images, even in low light conditions.

With 8x magnification and 32 mm objective lenses, Nature DX 10x32 strikes the perfect balance between performance and ease of use. Acquire and follow your subject quickly in the wide field of view. Or, observe nearby subjects like plants and insects with a close focus of just 6.5 feet.

Binoculars that fit your lifestyle

A durable rubber armored, polycarbonate housing protects your Nature DX binoculars from damage without weighing you down. Twist-up eyecups with multiple stops ensure proper positioning of the eyes, even for eyeglass wearers.

Waterproof, fogproof, and nitrogen purged, these binoculars can withstand the elements. They're easy to pack, even for long excursions, and fit comfortably in a glove box or oversized pocket.

Bird watching made easy

Birders will love Nature DX for its bright, sharp views of distinguishing features and markings. You'll get more bird identifications and more enjoyment from each birding outing. The 10x32 model is a favorite among beginning and intermediate birders, since birds are easier to locate and follow in its wide field of view. Take your passion for birding to the next level with Nature DX!

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

Part Number: J197150LM4

Part Number: J197160LM1

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

Part Number: 34L-314

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

565C1 Hotwire Air Velocity Meter by Test Products International

Features

• Air flow 0.2 to 20 m/s (Also reads km/s, ft/min, knots/h, miles/h)
• Temperature -5° to 175° F (-20° to 80°C)
• Data record function for maximum and minimum temperature and air velocity reading
• Download to a computer using the RS-232 port and optional A500 cable. (The 565 uses Microsoft Hyper Terminal to download and display air velocity and temperature on your PC.)
• 39" cable length, hard wired, telescoping tip expands from 10" to 37" (cable length decreases to 12" at full extension)
• Data Hold
• Auto Power Off
• Protective Boot Included