$200 - $300

Part Number: M197110LA

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

93454 Ultima Edge - 30mm Flat Field Eyepiece - 2" by Celestron

See the whole picture with Ultima Edge. These flat-field eyepieces were designed to provide an ultra-sharp, ultra-clear, crisp image from the center all the way to the edge of the field of view. The 30mm Ultima Edge eyepiece features fully multi-coated optics and a 9-element, element lens design, maximizing light transmission.

The Ultima Edge 30mm has a generous 70° field of view perfect for viewing planets, stars and the Moon's surface. This eyepiece provides low power magnification, perfect for deep sky objects and a bright detailed view of the moon's surface.

Body

The 30mm Ultima Edge eyepiece's main housing is machined from high grade aluminum with a black anodized outer surface.

Its 2" mounting barrel is internally threaded to accept standard 2" filters and adapters. It is compatible with 2" star diagonals and focusers. On the exterior of the eyepiece, you will find a uniquely designed, molded rubber grip ring for non-slip handling during observing sessions.

Viewing through the 30mm Ultima Edge eyepiece is comfortable for both eyeglass wearers and non-eyeglass wearers alike, thanks to the rubber eyecups and long eye relief of 22mm.

Convenient Parfocal Design

Spend more time observing and less time focusing! When you buy more than one Ultima Edge eyepiece, you can switch between them without refocusing thanks to their parfocal design. With a set of Ultima Edge eyepieces in your kit, you'll be able to enjoy a wide range of high and low power views–and switch between them quickly and easily. That means you can get more out of every observing session.

NOTE: Ultima Edge 24mm is not a parfocal eyepiece. Ultima Edge eyepieces are only parfocal within the line and do not maintain focus when swapped with parfocal eyepieces from other brands or series.

• 30mm parfocal Ultra Flat Field eyepiece designed for 2" focusers
• Incredibly crisp views from center to edge of field
• Fully multi-coated, 9-element lens design for excellent light transmission
• Wide 70°; apparent field of view allows you see more of the night sky
• Generous 22mm eye relief and fold-down rubber eyeguard for comfortable viewing with or without eyeglasses
• Molded rubber grip ring for non-slip handling

WD-20250-92 T/C Thermometer, 2-Input Data Logging, Type-J/K/T, NIST-Traceable Calibration by Digi-Sense

The Digi-Sense Professional Single-Input Thermometers offer fast response and laboratory accuracy. Features include automatic backlight, Max/Min readings, and automatic power-off. These thermometers provide precise measurements when accuracy is a must, delivering dependable results every time! Each model is packed with distinctive features for use in a wide array of applications. Robust and reliable constructed to protects against knocks and jars. These thermometers produce a high degree of accuracy, with a rapid response time, and exceptional battery life of up to 3000 hours.

Digi-Sense instrument are fully tested and calibrated to NIST-traceable standards, saving you hundreds of dollars and extra waiting time to calibrate separately.

Key Features

• Reliable measurements, guaranteed!
• NIST-traceable certificate included
• Heavy duty construction to protect against knocks and jars.
• Super large LCD for easy viewing of data
• Accepts a wide variety of probes
• Min, Max, and Avg readings, for quick analysis of the object
• Electronic Offset function allows compensation of probe errors
• Data logging models record up to 16,000 measurements for expanded data analysis capability
• Data logging models feature software that provides quick and easy data interpretation
• Data logging models record up to 16,000 measurements for expanded data analysis capability
• Data logging models feature software that provides quick and easy data interpretation
• Temperature differential plus Min, Max, and Avg readings, for quick analysis of the object
• Relative time clock on Min, Max, and Avg provides a time reference for major events
• USB InterfaceUSB Interface

Includes

Protective rubber armor boot with built-in stand, one 9 V battery, and NIST-traceable calibration report with data supplied by InnoCal. Data logging models 20250-92, -94, and -96 also include a USB cable and software.

Advanced features include data logging, USB interface, relative time clock, offset compensation, temperature differential.

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

Part Number: M1013800PN

Part Number: G11145PA

90586-30 Soil Thermometer, 36" L x 0.25" Dia; 0-200F/ -15-90C by Digi-Sense

• Ideal for measuring core temperatures in compost piles, hay, soil, or grains
• 3" diameter dial for easy reading
• Calibrate with external reset screw
• Thermometers meet ASME B40.3 standards for leak- and fog-proof operation
• Tips are 0.25" dia for fast response

2025HD 8" Diameter x 25' Heavy Duty Duct, Sleeve One End by Pelsue

Pelsue's Standard Ventilator Hoses are made to be compatible with Pelsue Blowers. Made of Polyester with a neoprene coating heat reaction (HRT), these hoses are built to last. These hoses are available both glued and sewn, in a variety of lengths, and with or without insulation. All hoses have a tension buckle and strap at one end.

Part Number: F105325PM64

90452-07 Precision Industrial PRT, 0.187" x 9", -60~160C, 5-Pin Din by Digi-Sense

AM1610 Series - Precision industrial PRT/RTD probes: Conform to the standard 385 curve, letting you use your DIN/IEC RTD meters fully. Manufactured using a special aged and tested 5mm long sensing element to achieve the best performance in stability and repeatability. All have an accuracy of 35 mK at 0°C and short-term stability of 10 mK at 0°C. The AM1610 has a temperature range of -60 to 160°C (-76 to 320°F)

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

3011M Conductivity Meter With Memory (Meter Only) by Jenco

The Basis Portable Series is Jenco's latest iteration of our portable meters and represents a huge step forward for on-location water quality measurements. This series introduces Bluetooth or non-Bluetooth connectivity and a merging of the best features from our other series, which means we double down on reliability, usability and value.

Accurate, Reliable Measurements

• 1 point/range calibration
• Each and every unit is hand calibrated and QC'ed by at least 2 teams.
• CE, RoHS complaint

Improved Usabiltiy

• Clear, large LCD
• Membrane buttons with tactile feedback On-devicememory storage
• 50 points memory
• IP67 water-tight housing
• Removable, rugged protective case
• Inclined back for tabletop use

Other Meters In This Series

• Single and dual parameter pH, ORP, conductivity, TDS, salinity,dissolved oxygen, optical dissolved oxygen, pH/ORP/EC, pH/ODO.
• Polarographic or optical DO
• Bluetooth and non-Bluetooth models
• With memory storage
• With or without protective case

GrowControl™ SXR Rain Sensor by Agrowtek

GrowControl™ Rain Sensor is a high quality optical type rain sensor with no moving parts. The rain gauge senses water hitting its outside surface using beams of infrared light. It uses the same sensing principle used in millions of automotive rain sensing windshield wiper controls.

Connect to GC-Pro or GC-Extreme controllers' digital inputs to close vents and windows down to a weather set-point at the first sign of rain.

Equipped with arm for mounting to structure or weather station. Includes a built-in heater to allow use in temperatures down to 32°F (0°C). Smart logic prevents false triggers from dust and other slow build-up of accumulation. Adjustable sensitivity allows for four different settings which activate the sensor from the slightest amount of rain to heavy rainfall.

Operates on 24Vdc from controller and connects directly to any digital input.

Specifications

• IR Rain Detection, No Moving Parts
• Fully Sealed
• Heated, use to 32°F (0°C)
• Connects to Digital Input on controller

2619407 Bacteria Tests: Hach Nitrifying Bacteria 7 pk by AquaPhoenix

BART biodetectors are excellent diagnostic tools to help identify the presence and activity of various bacteria.

Nitrifying bacteria recycle organic nitrogenous materials from ammonium (the endpoint for the decomposition of proteins) to nitrates. In water, aggressive nitrifiers can produce high concentrations of nitrates. Nitrates in water can be a potential health risk. Aggressive nitrifying bacteria in waters may indicate the latter stages of aerobic degradation of nitrogen-rich organic matter. This can indicate that the water may have been polluted by nitrogen-rich organics from sources such as compromised septic tanks, sewage systems, industrial and hazardous waste sites and is undergoing an aerobic form of degradation.

• Simple yet effective method for monitoring the population size and/or activity of specific groups of bacteria
• Easy to use, requiring no elaborate or costly equipment and no specialized training
• Effective and affordable tests are easy to interpret and can be performed at room temperature in virtually any environment

Part Number: J410A1000PA