$25 - $50

GHS1290LP Class 4.3 Dangerous Goods Laser Drum Labels (Paper), 100/Pkg by GHS Safety

GHS pre-printed drum labels come with your choice of pictorgram that meets the UN recommendations on the Transport of Dangerous Goods. These labels make an excellent choice for short production runs or re-labeling of product for transportation. These lebels are printed on a Laser Printable Paper or Vinyl stock with a permanent peel and stick adhesive. Use any desktop publishing package to quickly make your own transportation labels. Available in 8.5" x 14" size and packaged in bundles of 100 sheets.

35002-13 Waterproof/Shock-Resistant Digital Stopwatch with Calibration by Digi-Sense

Economical NIST-traceable stopwatch features split-mode timing to display the split-time while total timing continues. Alarm clock shows time of day and day of week. Water, dust, and shock resistant.

Includes:

NIST-traceable certificate based on a 24-hour period, 46"L neck cord, and 1.5 V button cell battery.

*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

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

CD601 Conductivity Tester with ATC and 1 point manual calibration by Milwaukee

The Milwaukee CD601 digital electrical conductivity (EC) Pen is designed for aquariums, aquaculture, pools, water conditioning and many other applications. The CD601 helps you make sure that your water has the right amount of nutrient to help keep fish tanks healthy or helps you keep your filters up-to-date and clean for water filtration. Keep EC in your target range to help your achieve better results.

DESIGN FEATURES

• Measures microSiemens (μS/cm) direct and with automatic temperature compensation.
• Ideal range for aquariums (0 to 1990 μS/cm).
• Units in μS/cm are easily convertable to (ppm).
• Factory calibrated with the ability to recalibrate if needed.
• Automatic Temperature Compensation (ATC).
• 350 hours continuous use (4 x 1.5V batteries included).
• Simple one point calibration.

MAINTENANCE

EC electrodes can develop nutrient build up over time. To miminize build up, always rinse the probe in fresh tap or DI water after every use.

CONVERTING EC TO TDS

The Milwaukee EC Pen, like all conductivity meters, provides a measure of electrically charged ions in a solution and is an absolute measure of conductivity.

EC is often converted to TDS in parts per million (ppm). Different scales include the 500 scale, 650 scale and the 700 scale. However, true PPM can only be determined through chemical analysis.

Your mS/cm reading can be approximately converted to TDS (ppm) as shown in the examples below.

2,000 μS/cm = 2.0 mS/cm = 1000 ppm on .50 factor scale

2,000 μS/cm = 2.0 mS/cm = 1400 ppm on the 442 scale or .70 factor scale

0590 0017 Carrying Case testo 770 by Testo

You can securely store your measuring instrument and accessories in the robust transport bag with a hard outer shell. The two internal mesh compartments ensure the stored items are properly held in place.

• Outside: impact-resistant transport bag with zip fastener
• Inside: two mesh compartments
• Dimensions: 270 x 150 x 75 mm

Includes:

Transport bag (without measuring instrument and accessories).

18525-77 Type T Economic Hollow Thermocouple Probe 12" L, 36" E x t 24 Awg .250 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).

• Response Time: 2-4 seconds or greater
• Each probe comes with a color coded ANSI mini 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

BA3000-Q Boric Acid Soln, 2% w/v with Indicator, 1L by AquaPhoenix

• APHA for Nitrogen (Ammonia) and Nitrogen (Organic), 4500-B, C

Specifications

• Packaging Type: Poly
• Concentration: 2% w/v
• Size: 1.00 L

08006-05 Galileo Thermometer; 64 to 88°F (18 to 30°C), 17 in. by Digi-Sense

Colorful glass thermometer is based on Galileo's theory developed over 400 years ago: in liquid, a body of fixed mass becomes less buoyant as the liquid temperature rises, and more buoyant as the temperature decreases - due to changes in liquid density. As temperature changes, the multi-colored balls rise and fall within the liquid-filled thermostatic tube. Lowest sphere in the top group within the instrument indicates ambient temperature.

• Hand-crafted thermometers
• Non-mercury liquid
• Seven floating spheres provide both Fahrenheit and Celsius readings
• Seventeen inches tall

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