$25 - $50

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

AI6925-P Alkalinity Indicator, Total, 500mL by AquaPhoenix

• pH 4.6(pink) - 5.2(green)
• APHA for Alkalinity, 2320-B

Specifications

• Packaging Type: Poly
• pH Value: 4.6-5.2
• Size: 500 mL

81036 NexGO Universal Smartphone Adapter by Celestron

The NexGO Universal Smartphone Adapter is a great first step into the world of astroimaging or digiscoping. The NexGO provides you everything you need to capture sharp, detailed images and video.

NexGO fits any eyepiece from 25.4mm (1.0") to 44.45mm (1.75") in diameter, including most telescopes with 1.25" eyepieces, spotting scopes, monoculars, binoculars, and microscopes.

NexGO accommodates a wide range of smartphones including the latest devices from Apple, Samsung, and Google. The phone platform is fully adjustable and can fit any device–usually with the case still on. For older phones that are 5" tall or less, the NexGO includes a booster to ensure the fit with the device.

Precise Alignment

The NexGO sports rack and pinion X- and Y- fine adjustment knobs for precise alignment and it folds up to a smaller size for easy transport. Secure the NexGO smartphone adapter to your eyepiece by tightening the orange knob which will clamp the unit around the eyepiece.

Maximize your storage space when traveling or not in use, the NexGO smartphone adapter collapses to a compact configuration for easy transportation and storing.

NOTE: The X and Y adjustment racks come calibrated from the factory, but should you need to adjust them, go to the Support & Downloads tab and read our Tension Adjustment Guide for details.

Robust Construction

The secure platform stands up to rigorous field use thanks to its robust, durable construction with a metal frame and polymer body. The NexGO will stand up to years of outdoor adventures.

Easy as Ever

Most adapters rely on you placing your phone perfectly on the platform and only offer limited adjustments. But NexGO gives you the power to place your phone on the platform, center it over the eyepiece with the X and Y adjustment knobs until you have the entire field of view in your shot.

From start to finish, the process only takes about 30 seconds, including the time it takes to insert the phone into NexGO, attach NexGO to an eyepiece, start the camera app, and center the camera over the eyepiece using the knobs.

Switching phones, eyepieces, or optical instruments, requires only slight adjustments to re-center the camera over the new eyepiece. If multiple people want to capture a shot through your optic, NexGO's simple spring-loaded clamps make it easy to remove one device and replace it with another in seconds. NexGO is the ideal solution for star parties and group bird walks where everyone wants their own shot of the action.

You can also switch your image from portrait to landscape simply by turning the padded eyepiece clamp and readjusting the X- and Y-axis to realign your phone with the eyepiece.

NOTE: NexGO is compatible with telescopes, spotting scopes, binoculars, monoculars, and microscopes. NexGO works with most phone cases, but if you have an especially large phone case with built-in batteries or a folio-style case, you may need to remove it.

• A complete digiscoping solution: NexGO connects your smartphone to your optic eyepiece
• NexGO's design works with most optics including telescopes (with most 1.25" eyepieces), spotting scopes, binoculars, monoculars, and microscopes.
• Folds up for easy transport and storage.
• Charge your phone during use.
• Features two directional knobs (X-, and Y- axis) that perfectly align your phone's camera with the eyepiece in seconds.
• Stands up to rigorous field use thanks to its robust, durable construction with a metal frame and polymer body.

CH9200-P Chlorine Standard Solution as Cl, 100 mg/L (ppm), 500mL by AquaPhoenix

Specifications

• Packaging Type: Poly
• Size: 500 mL

CY-7250-P Cylinder, Plastic 250mL by AquaPhoenix

Easily dispense liquids with the generous pour spouts on Thermo Scientific™ Nalgene™ PMP Economy Graduated Cylinders. These clear polymethylpentene cylinders exhibit good chemical and impact resistance and include easy to read molded-in graduations that won't rub off

06449-08 Traceable® Color Frame Four-Channel Timer with Calibration by Digi-Sense

Three bright, colorful frames permit personalization-or dedicate a certain frame for a certain timing task. Four independent timing channels feature unique audible alarms for simultaneous timing. Count up or down from 100 hours for longer duration experiments. Memory function returns the display to the programmed time.

Traceable® products are calibrated to NIST-traceable standards and ready to use as soon as you receive it. Each product goes through an intense vetting process before it can carry the Traceable name, and it includes NIST-traceable certification. This means that a 17025-accredited calibration test lab has confirmed that the product meets or exceeds all stated specifications, saving you both time and money by not having to calibrate separately.

NIST-traceable calibration also helps you meet quality standards and regulatory compliance for ISO, FDA, cGMP, VFC, CAP, CLIA and Joint Commission requirements.

Features:

• Get accurate, reliable measurements with included NIST-traceable calibration

Includes:

Three colorful faceplates/frames, built-in stand/pocket clip, magnetic back, two 1.5 V button cell batteries, and NIST-traceable calibration certificate with data.

18523-82 Type T Thermocouple Probe Quick Dis-connector, with Std-Connector, 12" L, .188 Dia, Ungrounded 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)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

18524-13 Type J Thermocouple Probe Quick Dis-connector, with Mini-Connector, 12" L, .062 Dia, 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)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

18524-21 Type J Thermocouple Quick Dis-connector, with Std-Connector, 18" L, .125 Dia. 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)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

18524-38 Type T Thermocouple Probe Quick Dis-connector, with Std-Connector, 18" L, .188 Dia, Ungrounded 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)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

18524-69 Type J Thermocouple Probe Quick Dis-connector, with Mini-Connector, 18" L, .062 Dia, 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)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

18526-90 Miniature Type-K Thermocouple Male Connector, 2 Pin, 5Pk by Digi-Sense

• Glass-filled nylon construction with hollow pins and molded barriers prevent short circuit
• Secure thermocouple wire into positive/negative terminals with screws
• Each connector comes in ANSI color coded material: type J-black, type K-yellow, and type T-blue
• Miniature connectors are suited for small wires and mineral insulated cables

18526-94 Miniature Type-T Thermocouple Male Connector, 2 Pin, 5Pk by Digi-Sense

• Glass-filled nylon construction with hollow pins and molded barriers prevent short circuit
• Secure thermocouple wire into positive/negative terminals with screws
• Each connector comes in ANSI color coded material: type J-black, type K-yellow, and type T-blue
• Miniature connectors are suited for small wires and mineral insulated cables

35002-11 Waterproof/Shock-Resistant Digital Stopwatch by Digi-Sense

Economical and rugged stopwatch features separate stop/stop and reset buttons. Includes alarm clock that shows time of day and day of week. Also includes split-mode timing to freeze the split-time display while total timing continues. Water, dust, and shock-resistant.

Includes:

46"L neck cord and 1.5 V button cell battery.

90260-17 General Purpose Liquid-In-Glass Thermometer; -10 to 110C, Total Immersion, Organic Liquid Fill by Digi-Sense

These thermometers are inexpensive and safe for use in laboratories, universities, food/beverage, environmental, wastewater, petrochemical, pharmaceutical and many other general-purpose applications. Choose from partial immersion or total immersion thermometers.

Thermometers feature permanently fused markings, blue spirit liquid, white background glass; are also individually serial numbered. Include a ring top and a statement of accuracy supplied by manufacturer.

• Nonmercury blue spirit liquid
• Statement of accuracy

Includes

Ring top and a statement of accuracy supplied by manufacturer.

90308-45 Irreversible 4-Point Horizontal Temperature Label, 140-171F/60-77C; 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