$20 - $25

BU5918-P Buffer, pH 9.18, 500mL 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: 500 mL
• pH Value: 9.18

0554 2006 Deco-Cover for testo 160 TH by Testo

Draw images, apply printed skins, or paint on the deco cover. The deco cover offers many design options - so your Wi-Fi data logger, like a chameleon, can blend in with its surroundings and be unobtrusive.

• Paintable deco cover perfect for blending in with the surroundings

Includes:

1 deco cover

94256 USB Cooling Fan for Dobsonian Telescopes by Celestron

The Celestron USB Cooling Fan is the ideal cooling solution for your StarSense Exploerer 10" and 12" Dobsonian telescope. For those who can't wait to observe, this handy accessory cools the primary mirror to the ambient outdoor temperature faster. The result is crisper, better-focused views sooner – and more time for you to observe.

This cooling fan mounts directly onto the rear cell of the StarSense Explorer 10" and 12" Dobsonian and works with any USB power source (portable power banks, AC wall adapters, and more). Once the primary mirror has cooled down and you are ready to observe, you can disconnect the fan's USB power source. Connect the cable to the integrated storage clip to stay organized.

Powering the Cooling Fan

Any USB power source can charge the cooling fan. Unlike other fans on the market, this USB Cooling Fan for Dobsonian Telescopes does not require an external, bulky 12V power source or disposable batteries. This fan uses less voltage (5V vs. 12V) than competing models. Still, our rigorous internal testing shows that the Celestron Cooling Fan provides better airflow and faster overall cooling compared to competitors.

Compatible Telescopes

The USB Cooling Fan for Dobsonian Telescopes is compatible with the StarSense Explorer 10" and 12" Dobsonian telescope and many other third-party Dobsonians and Newtonian Reflectors that have a compatible fan mount (four M4 x 0.7 threaded holes in a square pattern with holes spaced 71.5mm apart).

• USB-operated cooling fan for StarSense Explorer 10" and 12" Dobsonian and other Dobs and reflectors with a compatible fan mount
• Speeds up the cooling of the primary mirror to the ambient air temperature resulting in crisper, better-focused views in less time
• Mounts directly to the rear cell of the StarSense Explorer 10" and 12" Dobsonian telescope
• Integrated storage clip to secure the USB cable when not in use

08080-96 Stainless Steel Bimetal Pocket Thermometer, 2" Dial, Poly Lens, 8" Stem, -40 to 160F, 2F Div by Digi-Sense

• Factory tested to three points with a ±1% accuracy
• Minimum immersion: liquids 2" (50 mm), gases 4" (100 mm)
• Hermetically sealed dial stops internal fogging
• Recalibrate using external adjustment nut
• 304 Stainless Steel dial case and stem
• Shock resistant

Includes

All thermometers come with a statement of test and a beaker clip.

0572 2152 Door Contact Connecting Cable, Mini DIN Plug for Saveris 2-T2 by Testo

Your data logger records temperature fluctuations in a freezer or refrigerator. Is it possible that the door has not been closed properly?

The door contact connection cable means you can connect your appropriate data logger with a standard door contact (neither are included in the scope of delivery). In this way, the opening or closing of doors can be recorded, for example in refrigerators, deep-freeze rooms or chest freezers. The data logger triggers an alarm if required.

The door contact connection cable helps you to determine whether the refrigerator door may not have been closed (in good time). Because possible connections between temperature changes and the opening of the door can easily be detected in the data analysis.

• To connect data loggers and standard door contacts
• Enables the opening of refrigerator doors to be recorded
• Determine whether temperature fluctuations arise due to a door being opened

The door contact connection cable means you can connect your appropriate data logger with a standard door contact. The data logger can therefore record the opening of doors (e.g. refrigerator doors).

Delivery Scope

Door contact connection cable (2-core connection cable with mini DIN plug).

71232 UpClose G2 10x25 Roof Binocular by Celestron

• High quality binoculars at an affordable / economical price
• Multi-coated optics increase light transmission resulting in brighter and sharper images with high contrast levels
• Stylish rubber covered aluminum body protects from rough handling
• Ergonomic thumb indents and finger ridges for extra non-slip comfort and ease of use
• Water resistant
• Soft carrying case
• Binocular straps

Perfect For:

• Bird Watching
• Sporting Events
• Nature & Wildlife
• Hunting
• Travel & ventures
• Concerts & live events
• Boating

C-4601 Formaldehyde Comparator (round) by AquaPhoenix

C-4601 Low Range Formaldehyde Comparator is a component of K-4605 Formaldehyde CHEMets Visual Test Kit and is designed to be compared against the color formed in R-4815 Glycol/Formaldehyde CHEMets Refill. The comparator's range is applicable for many boiler water applications. Color standards are pink to purple in color and cover a range of 0-1.0 ppm Formaldehyde.

08006-43 Liquid-In-Glass Oven Thermometer; 20 to 130C, Organic Liquid Fill, Total Immersion by Digi-Sense

These thermometers are designed for use in specific applications. These Durac thermometers feature markings that are permanently printed on the glass, individually serialized, and red spirit liquid that has a dark scale contrasts against a white background. Some thermometers are PTFE coated for added safety which may cause a slight change in accuracy up to 1 division.

Oven thermometers - designed for high temperature applications and feature a round glass swell to hold the thermometer in place

• Non-mercury liquid

2745250 Test Strips: Hardness, Total as CaCO3, 0-425 ppm by AquaPhoenix

Water hardness is caused almost entirely by calcium and magnesium ions. Other di- and trivalent metals have a similar effect, but usually are not present in high enough concentration in potable waters to cause problems. Hardness increases soap consumption in laundries and causes scale in boilers. Contains 50 tests.

• Easy to use, disposable, and inexpensive
• A great way to obtain quick, quantitative answers in the field or in the lab

*mg/L unless otherwise noted, ppb = μg/L, ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm. 1EPA-accepted for wastewater. Check with your regulatory agency.

HA7405-P Hardness Buffer Solution, 500mL by AquaPhoenix

• APHA for Hardness, 2340-C
• Ammonia Solution/UN2672

Specifications

• Packaging Type: Poly
• Size: 500 mL

90225-29 Carrying Case for Scientific Thermometer, Padded Nylon 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.

• Replacement Probe for 90225-27
• Helps protect you meter while being stored

Includes

probe only.

Length(MM) & Diameter : 225 X Ø16.00
Temperature: -100°C ~ +400°C OR -148°F ~ +752°F