$75 - $100

21041 PowerSeeker 60AZ Telescope by Celestron

The Celestron PowerSeeker series of telescopes is designed to give the first-time buyer the perfect combination of quality, value, features and power. Offering exceptional value, these telescopes feature portable yet powerful designs with ample optical performance to excite any newcomer to the world of amateur astronomy.

• Quick and easy no-tool setup
• Slow motion controls for smooth tracking
• Erect image optics - Ideal for terrestrial and astronomical use
• Fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity
• 3x Barlow lens triples the magnifying power of each eyepiece
• BONUS Astronomy Software download with a 10,000 object database, printable sky maps and 75 enhanced images

BU5006-G Buffer, pH 6.00, 4L by AquaPhoenix

• ± 0.02 at 25°C

pH Buffer should be used regularly, typically every day the meter is used to calibrate your pH meters. Pour buffer into a clean separate container and never return used or unused buffer back into the container. Always keep tightly capped and adhere to the expiration date which is printed on the label.

Traceable to NIST

Specifications

• Packaging Type: Poly
• Size: 4.00 L
• pH Value: 6.0

Part Number: H101375VA

*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

TT230TB Tagboard Class 2.3 Toxic Gases Placard (10.75" x 10.75") by GHS Safety

Placards are displayed on vehicles, tankers, and containers to identify the risk of products being transported. GHS Line of placards are manufactured to meet the UN specifications on the Transport of Dangerous Goods.

These placards are stocked in 3 materials. Paper Tag-board placards are a cost effective single use format. Rigid Plastic placards will withstand multiple uses even in adverse weather conditions.

Outdoor Grade Peel and Stick Vinyl placards offer a permanent marking solution and will withstand outdoor environments.

Part Number: H101650PM1

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

19601-21 Traceable Salinity Pocket Tester with Calibration; ±0.5°C by Digi-Sense

Traceable® Products have an individually-numbered Traceable® Certificate provided with each unit, that assures accuracy from our ISO/IEC 17025:2017(1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Each product goes through an intense vetting process before it can carry the Traceable name, thus saving you both time and money by not having to calibrate separately.

Key Features

• Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory
• Waterproof pocket testers fulfill CAP, ASTM, NCCLS, CLSI, ACS, CLIA, AOAC, EPA, APHA, AWWA, WEF, USGS, USP and ISO
• Simply turn on, and insert - dual display shows results and temperature
• Hold key plus arrow keys for calibrating to standards
• Temperature range is 32.0 to 122.0°F (0.0 to 50.0°C)
• Temperature compensation permits readings to be automatically referenced to the international standard of 25°C or user may set a programmable temperature coefficient
• Tester size is 1-1/4 inches in diameter x 6-1/2 inches, weight is 2-1/4 ounces

Includes

NIST-traceable calibration certificate with data.

93831-20 Air / Gas RTD Probe, 100 Ohm, ANSI 3-Blade Connector, 5" L, 5ft Coil Cord by Digi-Sense

Maximum error for probe assembly is ±1.1°C + 0.12% of reading below 300°F, ±0.35% of reading above 300°F. Alpha coefficient is 0.003850 Ω/Ω/°C (DIN IEC 751). Resistance at ice point (0°C) is 100 Ω.

Note: Time constant is the time required to reach 63.2% of the new reading. To determine how long it will take to reach 99% of the new reading multiply the time constant by five.

Note: 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).

• Time Constant: 1-3 seconds or greater
• Custom designs or changes to this product are available upon request

77AK-600C 77A Temperature Transmitter, Type K, Temperature Range: 0 To 600 C (32 To 1112 F) by Jenco

2-wire thermo well head type 4-20 mA current loop output signal temperature transmitter for thermocouple or RTD applications, 3 user selectable temperature ranges and adjustable Zero Span with current output proportional to the display LED s brightness. Two ambient temperature ranges are available model 77 and 77A. Specify type J, K, E, T or RTD and specify temperature range.

• Fits standard thermo well heads
• 12-36 vdc powered
• 3user-select measurement ranges
• Current proportional led brightness
• Factory calibrated
• User adjustable zero/span
• 2ambient temperature ranges
• Factory custom calibration available

007A Holder, Spring Balanced, AluminumSwing Arm by Jenco

Versatile, sturdy, weighted base, always level head and holds 5 standard 12mm electrodes.

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

Part Number: H10133VN

Part Number: H197150LM43