$15 - $20

Length: 78 inches (2000mm)
Connector: RCA / RCA

1720500 Digital Titrator (Hach) J Tubes by AquaPhoenix

Titration delivery tubes. Straight with J-hook. 5 tubes/pk.

MA9065 111,800 μS/cm Conductivity Calibration Solution - 230 ml Bottle by Milwaukee

The performance of conductivity probes are affected by use due to residue build up and aging.

MA9065 is a lab grade 111,800 μS/cm conductivity solution standard prepared against a NIST traceable potassium chloride solution that allows you to recalibrate your conductivity meter or tester. Check your meter or tester's manual to find the correct calibration standard for your meter.

Conductivity readings are effected by temperature. To help with this, a chart of the actual μS/cm value at various temperatures is printed on each bottle

Milwaukee conductivity solutions are labeled with the lot number and expiration date and packaged in an air tight, tamper-proof sealed bottle.

DESIGN FEATURES

• Fundamental for accurate conductivity measurement.
• Factory calibrated with potassium chloride NIST 2202 SRM (Standard Reference Material) in deionized water for analytical use in accordance with ISO 3696/BS3978.
• Sealed against light with air tight, tamper proof cap.
• Each 230 mL bottle is marked with lot number and expiration date.
• A temperature chart of the actual µS/cm value at various temperatures is printed on each bottle.
• 5 year expiry date.

90300-29 Pocket Liquid-In-Glass Thermometer; -10 to 110C (0 to 220F), Closed Metal Case, Organic Liquid Fill by Digi-Sense

These thermometers are ideal for use in laboratory, biology, chemistry, university, photographic, food/beverage, petrochemical, automotive, wastewater and many other general purpose applications. The protective plastic case protects these thermometers from accidental breakage during use and storage. The section of the case that surrounds the bulb has small openings for circulation. All DURAC Plus® thermometers feature markings that are permanently printed on the glass, blue spirit liquid that has a dark scale contrasts against a white background.

• Non-mercury blue spirit liquid
• Closed metal case

Includes

Rugged metal case with an eyelet at the top for easy suspension

TDS9523/P Conductivity Solution, 9523ppm,10,000uS, 1Pt. by Sensorex

TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected conductivity or ppm level of total salts. Mixed Salt standards are the most frequently used in the field to sample naturally occurring water sources, boiler feed water, or cooling tower water. Typical river water, well water, or lake water sample will contain a mixture of several different salts. Sensorex Mixed Salt standards simulate a "Natural" mixture of common salt compounds found in these sources. Sodium sulfate, sodium bicarbonate, and sodium chloride salts are blended to provide a representative value. There are certain applications where Single Salt Solutions are preferred. NaCl Solution is routinely used to calibrate instruments measuring Sea Water or brackish water samples. Reagent grade salt and high resistivity DI water is compounded for accurate results. KCI Single Salt Solution may be used with conductivity meters that read directly in Siemens or Ohms. KCI (potassium chloride) is established as an international calibration standard for conductivity measurement. Choose the conductivity calibration solution that is right for your application. CA Residents: Prop 65 WARNING(S)

18526-25 Type T Economic Bolt On Thermocouple Probe #8 Screw 12" Fiberglass Ext. Grounded Junction by Digi-Sense

The temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C).

• Available in #6 (M3.5) or #8 (M4) screw sizes and different lead lenghts
• Response Time: 2-4 seconds or greater
• Each probe comes with a color coded ANSI mini connector or stripped leads: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request

93402 T-Ring for Nikon Camera by Celestron

A T-Ring is one of the first accessories you will need if you want to take pictures through a telescope or spotting scope. If you have a Nikon SLR or DSLR camera body, the Celestron Nikon T-Ring is the one for you.

In order to use the Nikon T-Ring, remove the lens from your camera, and attach the T-ring in its place, just as you would if you were mounting a lens. The telescope side of the t-ring has threads that will accept a variety of camera adapters, including the Celestron T-Adapter or Tele-Extender. The adapter you choose depends on the type of photography you wish to do.

You can take pictures of terrestrial and/or celestial scenes by using a simple T-Adapter to turn your telescope or spotting scope into a large telephoto lens. The #93633-A T-Adapter is the best choice if you own a Schmidt-Cassegrain telescope with standard rear cell threads. If you have a refractor, the Universal T-Adapter (#93625), with its 1-1/4" barrel insert, is available. There are also special T-Adapters for the EdgeHD optical system: one for the 8-inch EdgeHD (#93644) and one for the 9.25, 11, and 14-inch EdgeHD (#93646).

Prime focus photography is popular for short exposure images of terrestrial objects as well as celestial objects like the Moon.

If you need extra magnification beyond that which your Schmidt-Cassegrain telescope provides, a Tele-Extender (#93643) will allow you to insert an eyepiece inside the barrel before attaching it to the telescope. A Tele-Extender is used most often for high power images of the Moon and the planets.

• This Celestron T-Ring attaches to all Nikon SLR and DSLR camera bodies.
• Sturdy bayonet flange locks in place just like a lens, providing secure contact.
• Attaches to a variety of camera adapters and accessories via standard t-threads.

58-180-1M RG58/U, BNC Male to BNC Male, 15 Feet by Test Products International

50 Ohm, 75 Ohm, 93 Ohm. TPI BNC to BNC coax cable assemblies include: RG58/U (molded and assembled), RG59/U and RG62/U.

Features

• UL Listed Cable: Ensures quality and consistency in the cable construction.
• Boot is molded to cable connector for added strength: Limits the amount of bending the cable is exposed to at the connector to prevent cable breakage.
• Gold center pins: Ensures that there is a high quality connection maintaining the best return loss in high definition applications.
• Machined Brass Connectors: Unlike die-cast connectors, machined brass connectors have more precise tolerances, strength and positive mating meaning low signal loss for precise video and data applications.
• Boot is molded to cable connector for added strength
• 95% shielding
• 80°F temperature rating
• Multiple lengths up to 100 feet
• Individually bagged

C-5005 Hydrazine Comparator (round) by AquaPhoenix

C-5005 Hydrazine Comparator is a component of K-5005 Hydrazine CHEMets Visual Test Kit and is designed to be compared against the color formed in R-5005 Hydrazine CHEMets Refill. The comparator's range is applicable for many boiler water applications. Color standards are yellow in color and cover a range of 0-0.5 ppm hydrazine.