$200 - $300

S550CD-ORP/BNC ORP Electrode, double-junction, epoxy body, Pt pin sensor by Sensorex

When measuring samples such as wastewaster that may contain proteins, heavy metals, or other contaminants, it is important to use an ORP sensor (REDOX sensor) designed to withstand unpredictable chemical environments. The S550CD-ORP/BNC features double junction reference protection, which prevents contamination by sample components that interact with silver (Ag). The durable Ultem® body ensures extensive chemical compatibility, making the S550CD-ORP/BNC a highly versatile analytical tool.

• Virtually unbreakable with durable Ultem® body construction and recessed protected glass
• Reliable and accurate ORP / REDOX measurements
• No refilling or maintenance required with sealed gel-filled design
• Instantly ready for use and shipped in storage bottle for long shelf life – guaranteed for one year
• One year limited warranty

93820-45 Industrial RTD Probe 6" Length, 3/4" Thread by Digi-Sense

Industrial RTDs assemblies produce greater accuracy are ideal for use in industrial applications, chemical processes, production lines, ovens, furnaces and vessels. The probes conductor is made of 24 gauge cooper wire and is encased with FEP insulation, and has a 316 stainless steel sheath. Featuring a standard size protection head with a gasketed cap to seal out dust and moisture and houses a ceramic terminal block. Head has a 3/4" NPT (F) opening on the side for easy connection to electrical conduit. 316 stainless steel thermowells are included in assemble and are ideal for applications where removing of the probe without draining the vessel is necessary.

*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

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

71336 Nature DX 12x56 Binocular by Celestron

Celestron's Nature DX 12x56 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.

• Designed with the outdoor enthusiast in mind, waterproof and fully rubber armored.
• Phase coated BaK-4 prisms for increased contrast and resolution.
• Fully multi-coated optics provide brighter images by increasing light transmission through the entire optical path.
• Close focus of 9.8 feet for viewing nearby subjects.
• Sturdy, twist-up eyecups with multiple stops. Eyeglass friendly with 16 mm of eye relief.

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 12x magnification and 56mm objective lenses, Nature DX 12x56 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 9.8 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 12x56 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!

S273CD Comb pH Electrode with Hemi-pH Glass by Sensorex

This series of electrodes is designed to provide an economical multi-purpose solution for in-line or submersion pH measurements. Based on our proven S200C bulb and S350CD flat surface pH glass technology, these rugged and durable electrodes are available in Ryton nipples with 1/2" or 3/4" NPT threads; or in our durable epoxy body with or without quick disconnect top caps. Choose from single or double junction designs, flat or recessed measuring surface configurations and cable lengths and connectors as required.

• Economical design for in-line or submersion use
• Choose from single or double junction models
• Threaded 1/2" or 3/4" NPT connections
• Choose from spherical or flat pH measuring surfaces
• Special models for low ionic and other specialty applications available

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

SB-7500-P-PK Bottle, Nalgen Sample Bottle 500 mL, 12/pk by AquaPhoenix

Nalgene® Wide-Mouth HDPE bottles are durable, translucent and leakproof. These general-purpose bottles are ideal for collecting samples in the lab or field. Available in 250 or 500 mL.