$200 - $300

71404 TrailSeeker 8x42 Binocular by Celestron

TrailSeeker binoculars provide high-level outdoor performance, making them perfect for the avid birder or hunter. The TrailSeeker is a feature-rich binocular with superb optical quality at an economical price. Phase and dielectric coated BaK-4 prisms dramatically increase light transmission through the prism system for unrivaled image quality and views. Compared to other binoculars in its price range, TrailSeeker offers a better close focus along with a wider field of view. The lightweight magnesium alloy frame is durable and fully waterproof for use in any weather condition.

• Magnesium Alloy Body: Lightweight, durable frame that will last a lifetime and handle use in the field.
• BaK-4 Prisms with Phase and Dielectric Coatings: Increased light transmission through the prism system for brighter images. Increased contrast and resolution.
• Extremely Wide Field of View: Quickly acquire the subject being viewed. Follow your subject more easily, with less need to move the binoculars.
• Ergonomic Design
• Fully Multi-Coated Opitcs: Increased light transmission for brighter views and more resolution.
• 6.5' Close Focus: Detailed, up close observation of subject in close proximity.
• Metal Multi-Stop Twist Up Eyecups: More durable with a longer life than plastic eyecups. Multiple stops for correct positioning of the eyes.
• Tripod Adaptable: Attach your TrailSeeker to a tripod for extended viewing sessions.

Part Number: F10175PN

S272CDTC/P1K/10/BNC/TL pH Electrode, double-junction, P1K, BNC/TL 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

44316 Microdirect 1080P HDMI Handheld Digital Microscope by Celestron

A New View

The MicroDirect 1080p HDMI Handheld Digital Microscope streams in amazingly clear 1080p HD video via HDMI cable-directly through a TV monitor or projector-- No computer needed. This microscope can connect to any compatible monitor or projector via HDMI cable for real 1080p HD video streaming at up to 220x magnification. That means high quality viewing of 3D specimens, samples, and even some slides!

REAL HD Video and Imaging

Great for the classroom, lab or home, the 3.5MP high speed sensor allows for high definition streaming and still image and video recording. Still images can be saved directly to the onboard Micro SD slot (card not included) while viewing on monitor. The included PC software and USB cable make recording HD videos simple. Use the included fully adjustable stand to steady the microscope to get the perfect image or video.

• 1080p video streaming of microscopic worlds via included HDMI cable directly to your monitor or projector. NO COMPUTER NEEDED!
• 3.5MP high speed sensor has larger pixel sizes that allow more details and a higher refresh rate
• 10x to 220x power magnification
• Records high definition still images. Images are saved directly to a Micro SD card (not included)
• Capture 720p High Definition video at 30fps when connected to a PC via USB
• We're taking our handheld digital microscope line to the next level with the MicroDirect 1080p HDMI Handheld Digital Microscope. Perfect for teachers, students, entomologists, forensic scientists, microscopic explorers, and more. This microscope not only offers true 1080p, high definition viewing, but also still image and video recording.

FCLA-5018 Free Chlorine Maintenance Kit by Sensorex

Keep your free chlorine amperometric sensors running for extended lifetime and improved accuracy using this free chlorine maintenance kit. Compatible with FCL Series Free Chlorine Amperometric Sensors. This kit includes:

• (1) replacement membrane cap
• (1) replacement pressure relief band
• (2) 30mL bottles of electrolyte refill solution
• (2) 10mL syringes
• (3) polishing squares

1-Phase/Single-Speed Motor, 1/2 Hp, 115/230V, 60 Hz, 825 rpm

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

98767-19 Type K Thermocouple Probe; Surface-Temperature, Coiled Cable by Digi-Sense

These probes are available in many types such as beaded, cabled, or penetration probes as well as many temperature ranges for many applications.