Field Supplies: Calibration Solutions
EQUIPCO NIST Traceable Standards
EQUIPCO calibration solutions are identical to instrument manufacturer’s standards, accurate, NIST certifiable, and priced economically. We offer our calibration solutions in both convienent 500 ml bottles and 20 L boxes.
Our pH buffers are color coded (pH 4 red, pH 7 yellow, and pH 10 blue), formulated for a long shelf life, and are resitant to bacteria or mold growth. They are accurate to within 0.01 pH at 25°C, exceeding the capabilities of all field pH meters. they are available in individual 500 ml bottles, 20 L boxes, or as a pH meter calibration kit including 2 bottles of each buffer solution.
Our conductivity buffers are available in either 1000 µS for freshwater or 58,700 µS for saltwater. They are accurate to within 1% at 25°C and can be purchased in 500 ml bottles or 20 L boxes.
We also offer standard zobell solution in a 500 ml bottle for calibrating ORP probes. An ecomonical method for creating Turbidity standards is to mix the NTU value desired using our Formazin solution. Formazin comes in 125 ml bottles and is enough to mix a large amount of turbidity solution.
Traceablity certificates can be provided on request. EQUIPCO calibration solutions work with any of the instruments we offer, cost less, and are always available to ship immediately.
EQUIPCO pH Calibration Solutions
Call to Order
1-888-234-5678
| Part No. | Description | Price |
|---|---|---|
| PH-COMBO-PK | EQUIPCO pH solution combo pack 6 individual 500 mL bottles, 2 each of pH 4, 7, and 10 |
|
| PH4-500ML | EQUIPCO pH solution 500 mL bottle, pH 4 |
|
| PH7-500ML | EQUIPCO pH solution 500 mL bottle, pH 7 |
|
| PH10-500ML | EQUIPCO pH solution 500 mL bottle, pH 10 |
EQUIPCO Conductivity Calibration Solutions
Call to Order
1-888-234-5678
| Part No. | Description | Price |
|---|---|---|
| COND-1K-500ML | EQUIPCO conductivity solution 500 mL bottle, 1000 µS |
|
| COND-58K-500ML | EQUIPCO conductivity solution 500 mL bottle, 58700 µS |
EQUIPCO Other Calibration Solutions
Call to Order
1-888-234-5678
| Part No. | Description | Price |
|---|---|---|
| ORP-500ML | EQUIPCO ORP solution 500 mL bottle, Zobell solution |
|
| Formazin | EQUIPCO Formazin solution 125 mL bottle, 4000 NTU stock suspension |
$35.00 |
| AUTOCAL-500ML | EQUIPCO auto cal solution 500 mL bottle, pH 4, 4490 µS, 0.0 NTU |






