$200 - $300

PH60S Premium Spear pH Pocket Tester for Solid/Semi-Solid Sample Testing (Cheese, Meat, Sushi Rice, Soil...) by Apera

Simply the best pocket pH tester in the market designed for food (cheese, meat, fruit, sushi rice), soil, and other semi-solid's pH measurements thanks to the Swiss LabSen 753 Spear electrode, which is impact-resistant and hard to be contaminated. Also works great for regular pH testing.

Up to 3 points of Auto Calibration with buffer recognition and 0 to 50°C Auto Temperature Compensation (ATC), ±0.01 pH, 0.5°C accuracy with -2.00 to 16.00 pH measuring range, auto recognition and indication of stable values improves consistency, saving you the trouble of guessing when to manually hold measurement (optional auto hold function available).

With an Ultra clear 180° viewing angle screen with 3 backlit color (blue for measuring mode, green for calibration mode, red for warnings), it supports dual display of temp./pH value and indications of completed calibrations (where L/M/H indicate 3 points of calibrations) and stable readings (with a smiley face).

Comes with a complete kit of premixed calibration solutions (4.00 and 7.00), storage solutions (3M KCL), AAA batteries, and a lanyard all in a portable carrying case. Easy menu setting, customizing your tester according to your specific needs. Smart self-diagnosis, warning of out-of-range/preset measurement and incorrect calibrations. IP67 water-proof and dust-proof, floats on water so you don t have to worry if dropped in water by accident. Longest 2000 hours of continuous operation (without backlit) powered by AAA batteries (with low power warning and auto power off in 8 min if no operation).

Warranty: 2 years for the meter, 6 months for the spear probe.

• Replaceable Swiss Spear Sensor that is perfect for food, soil, and other semi-solid pH testing (also works great for aqueous pH testing). Easy to install so that you don't have to buy a whole new meter once the probe retires.
• 3 types of replaceable probes for your choice, aiming at pH measurements for different substances.
• Easy Auto Calibration with buffer recognition; Auto Temp. Compensation (ATC) which ensures accuracy in variant temperatures (0-50.0°C)
• Auto recognition of stable values (optional auto hold function available) improves consistency so you don't have to guess when to manually hold measurement
• Large Clear LCD screen with 3 backlit color (indicating 3 different modes), dual display of temp./pH, and indications of completed calibrations and stable readings
• Complete kit with ready-to-use calibration solutions, calibration bottles, storage solutions, AAA batteries, a quick manual, and a lanyard all in a portable carrying case

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

3173 Large LCD Conductivity/TDS/Temperature Benchtop Meter by Jenco

Conductivity/TDS/Temperature benchtop meter, with an extra large LCD display, adjustable cell constants K=0.1, 1.0, 10.0, programmable temperature co-efficient and reference temperature. Battery or 115/230 AC powered. CE approved.

• Clear, large LCD display (4 1/8 x 3 1/16 in.).
• Displays conductivity and temperature, or tds and temperature readings at the same time.
• Accepts 2-wire conductivity cells with adjustable k=0.1, k=1 and k=10 cell constants for improved flexibility and accuracy.
• Auto or manual ranging of 3 conductivity ranges are available for improved usability.
• Convenient one point calibration. calibration data is stored in memory and is ready for use on power up.
• Readings are automatically compensated for temperature (ATC). meter automatically switches into manual
• compensation when temperature probe is not present.
• Automatic lock mode is available to lock in stable readings.
• Intuitive operation with membrane keypad with tactile and audio feedback.
• Splash resistant case is made with durable, reinforced plastic for added protection. protective covers for connectors are included.
• Large LCD is offset for improved protection against unintentional damage.
• Smaller case does not clutter valuable desk space.
• 8pin DIN connector for conductivity cell & 10k thermistor.
• AC adaptor or battery power.

*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

Old Part Number: Z10795MX
New Part Number: Z10795PM4

Part Number: M197850VN

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

SX-V Wind Direction Sensor by Agrowtek

High quality electronic wind direction vane sensor for SXW weather station transmitters. Made in USA.

• 0 - 359°
• 25ft Cable
• Mounting Bracket

6173 Large LCD Benchtop pH/mV/Temperature Meter by Jenco

pH/mV/Temp benchtop meter with an extra large LCD display for ease of use. Features a splash proof and rugged case ideal for schools and universities. Features EEF, Electrode Efficiency Function, multiple buffers 4.00, 4.01, 6.86, 7.00, 9.18 & 10.0 and automatic slope, buffer and electrode offset recognition. Has power down memory backup and works on 6 AA batteries or 115/230 V AC adapters. CE Approved & ISO 9001 Certified.

• Larger LCD display
• Buffers recognition
• Electrode offset recognition
• Electrode slope recognition
• Built in buffer temp. coefficient
• Auto lock
• Touch keys with audio feedback
• Power down memory
• Battery/ac adaptor
• Low power consumption
• Battery low indicator
• Percentage of power supply display

*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

42141 Standard Accessory Pack by GMI

Includes

• Gasurveyor 500 Carrying Case
• 35cm Small Probe (open end)
• Probe Handle Assembly
• Cotton Filters (2 Packs of 10)
• Sample Line Adaptor

52310 Hummingbird 9-27x56 Micro Spotting Scope by Celestron

The Hummingbird spotting scope shares many qualities with its namesake bird. In the wild, hummingbirds are known for their very small size, their agility (they can fly in most any direction at will), and their ability to travel long distances (many migrate between South and North America). The Celestron Hummingbird is the world's first "micro" spotting scope well suited for hikers, birders, and other wildlife watchers on the go.

• World's first micro spotting scope-fits easily in your vest/coat pocket, cargo pants, or shoulder bag
• 9-27x magnification range
• Comfortable 45° viewing angle
• Close focus distance of 10 feet
• Tripod adaptable for long-duration or long-distance viewing
• Durable, fully waterproof construction withstands bumps and jolts, wet/humid weather, and other environmental challenges

Go "Micro"

Standard spotting scopes tend to be large and/or heavy, making them inconvenient to carry long distances in the field. The Hummingbird will shatter your expectations for how lightweight and compact a spotting scope can be, so you'll take it places you never thought possible. You can easily hold this spotting scope in one hand, place it in a pocket, or pack it along in your carry-on luggage without compromising space.

Crisp, clear images

Although it is small, Hummingbird does not compromise on quality. All air-to-glass surfaces are fully multi-coated with high transmission optical coatings. The result is maximum light transmission for bright, sharp and contrast images. The prism is phase-coated BaK4, which increases contrast and resolution for sharper, more detailed images.

Durable, waterproof construction

The durable body of the Hummingbird works to keep the spotting scope protected against bumps and jolts both during transport and in the field. It's also fully waterproof and nitrogen-purged, so you can use the scope worry-free in downpours, humid conditions, and other environmental challenges.

Ready for any adventure

The Hummingbird 9-27x56 spotting scope features a close focus of 10 feet, making it perfect for viewing birds, butterflies, plants, or other nearby subjects. The magnification of the 9-27x56mm spotting scope spans the standard magnification ranges of both a binocular and a spotting scope. No matter how you choose to observe, this versatile spotting scope is an excellent all-around performer.

Ways to observe

Unlike most spotting scopes, Hummingbird is so small that you can use it handheld at the lowest magnification level for a quick view of your subject. Travelers who want to save space can replace both their binocular and their spotting scope with this one optic. But the scope is also tripod adaptable, so you can secure it to a stable platform for comfortable long-duration or long-distance viewing.

Hummingbird provides plenty of eye relief for use with or without eyeglasses. For use while wearing eyeglasses, leave the twist-up eyecup in the lowered position. For use while not wearing eyeglasses, twist the twist-up eyecup into the extended position.

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

Part Number: F104010PN

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