$25 - $50

94112-A 1.25" Erect Image 45° Diagonal by Celestron

Did you know that most telescopes work well for daytime viewing as well as for astronomy? If you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect-image diagonal.

If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two. This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch.

Luckily, this is an easy problem to correct. Simply remove the standard diagonal from the telescope's focuser or visual back, and install the Celestron 45° Erect Image Diagonal. Now, when you insert an eyepiece, objects will be right side up and left-to-right correct. The 45° angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position.

Please Note: Adding an erect-image diagonal to a Newtonian reflector will not result in images that are right side up and left-to-right correct. The optical design of a Newtonian will always produce images that are rotationally off in orientation. This does not mean that you can't use a Newtonian reflector during the day, it just means that you have to get used to objects oriented in unrealistic positions.

• A great accessory for daytime terrestrial viewing with your telescope.
• This 1.25" diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes.
• Inserts into 1.25" focusers or visual backs. Accepts standard 1.25" eyepieces.

WD-00653-18 1413 µS Conductivity/TDS Calibration Solution 500 mL (1-pint) Bottle by Oakton

Choose from economical 1-pint solution bottles or individually sealed Singles calibration pouches.

All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use.

OAKTON conductivity/TDS solution bottles are labeled with the name and CAS number for all ingredients to conform with Right-to-Know requirements, and includes an MSDS. Solutions come in one pint bottles. Dimensions: 7.75"H x 2.25" dia. Shpg wt: 1.1 lbs.

OAKTON Conductivity Singles pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Pouches are labeled with equivalent values for ppm in KCl, NaCl and 442 and Conductivity values at 25°C and CAS numbers for Right-to-Know requirements. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W x 4.5"H (box). Shpg wt 1 lb per box.

• NIST traceable materials
• ±1% accuracy at 25°C

WD-00653-47 447 µS Conductivity/TDS Calibration Solution 500 mL (1-pint) Bottle by Oakton

Choose from economical 1-pint solution bottles or individually sealed Singles calibration pouches.

All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use.

OAKTON conductivity/TDS solution bottles are labeled with the name and CAS number for all ingredients to conform with Right-to-Know requirements, and includes an MSDS. Solutions come in one pint bottles. Dimensions: 7.75"H x 2.25" dia. Shpg wt: 1.1 lbs.

OAKTON Conductivity Singles pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Pouches are labeled with equivalent values for ppm in KCl, NaCl and 442 and Conductivity values at 25°C and CAS numbers for Right-to-Know requirements. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W x 4.5"H (box). Shpg wt 1 lb per box.

• NIST traceable materials
• ±1% accuracy at 25°C

0572 2020 Saveris 2 Power Supply, 5V DC / 900mA by Testo

USB Power Supply for testo Saveris 2 and testo 160 Wi-Fi dataloggers. When the power supply is connected, the battery power is turned off; no need to remove batteries. Batteries can stay installed, for battery backup, in the event of a loss of power.

Input: 100-240 VAC, 50-60 Hz
Output: 5V DC / 900 mA
USB-A to Micro-B Cable, 4.9 ft. (1.5 m)

• 4.92 ft. / 1.5 m USB-A to Micro-B cable
• Power supply with a set of international plugs
• Power supply not to be connected to PC
• Micro-B USB plug connects to Wi-Fi data logger

USB Power Supply for testo Saveris 2 and testo 160 Wi-Fi data loggers. When the power supply is connected, the battery power is turned off; no need to remove batteries. Batteries can stay installed, for battery backup, in the event of a loss of power.

Delivery Scope

USB Power Supply for testo Saveris 2 and testo 160 Wi-Fi data loggers, including USB cable, and 1 set of changeable international plugs

09035-19 Irreversible 5 to Point Vertical Temperature Label, 171 to 210°F/77 to 99°C; 10/Pk by Digi-Sense

Labels are made up of a series of temperature-sensitive elements sealed between heat-resistant substrates with transparent windows. Each element changes color distinctly as its rated temperature is met or exceeded. The changes to the label are irreversible, providing a temperature history of the surface being monitored. The labels will not delaminate when removed, allowing them to be attached to an inspection report to serve as a permanent record. Ideal for use in the food, automotive, molding and metal working industries. Accuracy is ±1.8°F below 212°F and ±1°F above 212°F. Shelf life: 1 year after date of purchase.

• Used as a quick inspection tool that the product is in usable condition during the shipping and receiving process
• Save time and money due to costly recalls
• Self-adhesive design

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

WCTK100 Water Conditioning Hardness Kit by AquaPhoenix

1 drop = 1 gpg as CaCo3 / 15 mL
1 drop = 0.5 ppm as CaCo3 / 25 mL

EndPoint ID test kits are packaged in a durable plastic case and include all reagents, equipment and instruction card to complete approximately 60-75 tests. Color coded reagent caps match the color bar on the instruction card for easy identification when running multiple tests and our photographic, step-by-step instructions keep testing simple and help users easily identify color changes.

Package Includes: 2 Clips, 2 leads and ground lead

Part Number: 17L-80-500

10-102-18 Carbon Monoxide Colorimetric Gas Detection Tube, 5 - 100 ppmv selective (10 Tubes / Box) by RAE Systems

RAE Systems colorimetric gas detection tubes enable quick, on-the-spot measurement of a wide range of toxic and combustible gases and vapors. RAE Systems tubes are easy to read, and provide a sharp, clear color change directly corresponding to the concentration of gas present. RAE Systems tubes are compatible with the RAE Systems piston hand pump, a reliable way to draw samples of an exact volume required for the most accurate measurements.

Key Features

• Wide assortment of tubes available to detect over 300 gases and vapors
• Easyto use, even in multiple layers of gloves
• Easy-to-read with sharp,clearcolorchange
• No calibration or other maintenance required

Applications

• Oil and gas
• Chemicals and petrochemicals
• Agriculture and pestcontro
• Food and beverage production
• Environmental protection
• Fire service
• HazMat response
• Nationalsecurity

WD-00653-23 23 µS Conductivity/TDS Calibration Solution 500 mL (1-pint) Bottle by Oakton

Choose from economical 1-pint solution bottles or individually sealed Singles calibration pouches.

All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use.

OAKTON conductivity/TDS solution bottles are labeled with the name and CAS number for all ingredients to conform with Right-to-Know requirements, and includes an MSDS. Solutions come in one pint bottles. Dimensions: 7.75"H x 2.25" dia. Shpg wt: 1.1 lbs.

OAKTON Conductivity Singles pouches are convenient, air-tight pouches with high-precision calibration standards. Ideal for field use-take them to your test site for on-the-spot calibration. Pouches are labeled with equivalent values for ppm in KCl, NaCl and 442 and Conductivity values at 25°C and CAS numbers for Right-to-Know requirements. Each box contains twenty 20 mL pouches. Dimensions: 4.5"L x 5"W x 4.5"H (box). Shpg wt 1 lb per box.

• NIST traceable materials
• ±1% accuracy at 25°C

K-7513 Oxygen (Dissolved) Vacu-vials® (0-15.0 ppm) by AquaPhoenix