$10 - $15

MA9006 pH 6.86 Calibration Buffer Solution @ 25 °C/77 °F: accuracy +/- 0.01 pH - 230 ml by Milwaukee

Probe calibration is a simple procedure for optimal performance and should be done any time your readings become suspect. Calibration should be performed at least once a month.

MA9006 is a lab grade pH 6.86 buffer solution certified to meet the standard to an accuracy of ±0.01 pH removing the inaccuracies involved with mixing buffers.

Milwaukee solutions are designed to help you achieve reliable and repeatable pH measurements while extending the life of your electrode.

DESIGN FEATURES

• pH 6.86 Calibration Buffer Solution (230 mL)
• Fundamental for the correct use of electrodes and for obtaining the most accurate and reproducible readings
• Sealed against light with air tight, tamper proof cap
• Ideal for fast calibration
• Simply open, pour into a beaker or container and insert the tester or electrode to start the calibration process.

ST2776-A Sodium Thiosulfate High Range, 30mL by AquaPhoenix

1 drop = 50ppm ClO2/ 10mL

TDS500/P Conductivity Solution, 500ppm/731uS, 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)

18528-06 Spade Lugs, Iron, for Type J Thermocouples; 10/pk by Digi-Sense

• Maintain accuracy by choosing spade lugs that match the composition of your thermocouple wires
• Available in the most common reference materials
• Avoid confusion - each connector has the material abbreviation stamped into it
• Sold in packs of ten