$150 - $200

WD-35634-46 pHTestr® 5F Flat-Tip Waterproof Pocket Tester by Oakton

Save money by replacing sensor, not the tester

Measuring water quality can be challenging. You need an instrument that is reliable over and over again. With the Oakton Waterproof Testr 5 Series pocket testers, you not only experience consistent reliability, but you also get a pocketful of useful features and benefits. You can also stretch your budget by only replacing the single-junction sensor and keeping the tester.

• Easy to set up and use
• Intuitive interface has self-diagnostic error messages, and stable reading and battery-life indicators
• Unique colored backlight indicates operating mode
• Simple to calibrate with automatic standard recognition USA or NIST
• Rugged IP67-rated housing is waterproof, dustproof, and floats in water with sensor cap on
• Leakproof cap with fill line functions as a sample, calibration, and hydrating cup
• Uses common AAA batteries

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

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

72322 Nature DX 8x42mm Roof Binoculars by Celestron

Celestron's award-winning Nature DX 8x42mm 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 8x42mm offers 8x 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 8x42mm 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

Old Part Number: 104925
New Part Number: J104925LA

Part Number: 103L-154-25

Part Number: 34L-325

S01-3001-210 ProRAE Guardian Care Center Tier 3 Yearly Subscription per Instrument by RAE Systems

ProRAE Guardian Care Center is an advanced device management software used to manage fleets of instruments by providing tools to automate several common tasks for improving worker productivity. All Care Center license keys are valid for a fixed duration of time.

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

Old Part Number: 1028100N
New Part Number: J1028100PN

SI20UL01UN23 Si-20 Mini Condensate Removal Pump (5gph) 230V by Sauermann

Slim design for a quick installation inside the air conditioning unit.

• Slim Design
• Incredibly Quiet
• Rubber Dampers
• Drain Safe Device

Kit content

• 1 Si-20 Piston Pump
• 1 Detection Unit - SI2958, 2' cable
• 1 Anti-Vibration Rubber Dampers (2)
• 1 Clear PVC Tubing, 1/4" i.d. fitted with a Drain Safe Device
• 1 Power Cable, 5' (2 power wires, 2 safety wires)
• 1 90 Deg Rubber Elbow, 19/32" i.d. x L 6"
• 1 Vent Tube, 5/32" i.d. x L 2 15/16"
• 1 Split Connector, 1/2" - 10/16"
• 1 Double Wire Clamps (3)
• 1 Tie Wraps (3)