$10 - $15

TDSK1413/P Conductivity Solution, 1413uS KCl, 1Pt. by Sensorex

TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected conductivity or ppm level of total salts. Mixed Salt standards are the most frequently used in the field to sample naturally occurring water sources, boiler feed water, or cooling tower water. Typical river water, well water, or lake water sample will contain a mixture of several different salts. Sensorex Mixed Salt standards simulate a "Natural" mixture of common salt compounds found in these sources. Sodium sulfate, sodium bicarbonate, and sodium chloride salts are blended to provide a representative value. There are certain applications where Single Salt Solutions are preferred. NaCl Solution is routinely used to calibrate instruments measuring Sea Water or brackish water samples. Reagent grade salt and high resistivity DI water is compounded for accurate results. KCI Single Salt Solution may be used with conductivity meters that read directly in Siemens or Ohms. KCI (potassium chloride) is established as an international calibration standard for conductivity measurement. Choose the conductivity calibration solution that is right for your application. CA Residents: Prop 65 WARNING(S)

BU5004-P Buffer, pH 4.00 ± 0.01 at 25°C, 500mL by AquaPhoenix

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: 4.0 (color coded red)

AI1101 pH 7.00 Calibration Buffer Solution 8 oz. by Apera

The Apera Instruments AI1101 pH 7.00 Calibration Buffer Solution is color-coded and standardized against NIST certified pH references within 0.01 pH at 25°C (77°F). It's ideal for the calibration of all kinds of pH meters/testers. Since pH level is affected by temperature, a temperature/pH reference chart is provided on the bottle label for reference.

All the solutions are double-sealed, not subject to the DOT shipping restrictions, and have a 2-year shelf life. The expiration date is printed on the bottle.

MSDS documents are downloadable. Certificate of analysis can be achieved by request.

Note: Store at room temperature and away from direct sunlight. Keep the bottle tightly closed when not in use. Keep out of reach of children.

• High Accuracy (±0.01 pH): standardized against NIST certified pH references within 0.01 pH at 25°C (77°F).
• Ideal for the calibration of all kinds of pH meters/testers
• Color-coded, Double-sealed, 2-Year shelf life
• Expiration date and Temperature/pH reference chart provided for reference
• Non-hazardous product (MSDS is downloadable)

08008-11 General Purpose Liquid-In-Glass Thermometer; -35 to 50C, 76mm Immersion, Organic Liquid Fill by Digi-Sense

These thermometers are ideal for use in laboratory, biology, chemistry, university, photographic, food/beverage, petrochemical, automotive, wastewater and many other general purpose applications.

All Durac thermometers feature markings that are permanently printed on the glass, red spirit liquid that has a dark scale contrasts against a white background.

• Non-mercury red spirit liquid
• Celsius-scale