CHEMETRICS

CHEMETRICS test kit reagents, including CHEMets® ampoules and Vacu-Vials®, generally have a shelf life of 12 to 24 months from the date of manufacture when stored in a cool, dry environment away from direct sunlight. The exact shelf life varies by parameter and is printed on each kit's packaging. For example, the Chemical Oxygen Demand kit (K-7355) and the Sulfide kit (K-9520B) both have expiration dates indicated on the box. It is recommended to use kits before the expiration date to ensure accuracy. 3G Electric provides lot numbers and expiration details upon request for bulk orders.

Yes, many CHEMETRICS kits are designed for use with spectrophotometers or LED photometers for quantitative analysis. For instance, the Chemical Oxygen Demand kit (K-7355) specifies a sensitivity of 3 mg/L when using a spectrophotometer and ±7 mg/L with an LED photometer. Kits like the Ozone kit (I-2019) provide sensitivity values at multiple concentration points for instrument calibration. CHEMETRICS also offers dedicated photometers, such as the V-2000 series, which are pre-programmed for their test parameters. 3G Electric can supply compatible photometers and accessories alongside the test kits.

CHEMets® are self-filling ampoules that use a vacuum to draw a sample into the reagent, providing a sealed reaction vessel for colorimetric analysis. They are typically used for higher concentration ranges, such as the Sulfide kit (K-9520B) with a range of 125 to 1,250 ppm. Vacu-Vials® are pre-measured, vacuum-sealed vials that require the user to snap the tip in a sample cup to fill, offering a more controlled sample volume. They are often used for lower concentration ranges, like the Ozone kit (K-7423) with a range of 0 to 0.05 ppm. Both types eliminate manual reagent handling and improve repeatability.

Selecting the correct CHEMETRICS kit involves matching the target parameter (e.g., total chlorine, iron, hydrogen peroxide) with the expected concentration range in your water sample. Each kit has a specified range and sensitivity, as shown in the product specifications. For example, the Total Chlorine kit (K-2513) covers 0 to 5 ppm with a sensitivity of 0.25 ppm, while the Iron kit (K-6002) covers 0 to 100 mg/L with a sensitivity of 5 mg/L. If the concentration is unknown, start with a broad-range kit or use a dilution method. 3G Electric's product datasheets include full range and sensitivity details to aid selection.

Yes, CHEMETRICS test kits are designed for portability and field use. The kits come in compact, rugged cases that protect the ampoules and accessories. The self-contained ampoule design minimizes exposure to contaminants and reduces the need for additional lab equipment. For example, the Monochloramine kit (K-6802) includes a stabilizer solution and is suitable for on-site testing in water treatment plants or industrial facilities. However, extreme temperatures or direct sunlight may affect reagent stability, so storage guidelines should be followed. 3G Electric can provide guidance on kit selection for specific environmental conditions.

Yes — 3G Electric (S) Pte. Ltd. supplies CHEMETRICS products. We stock the CHEMETRICS catalog and supply genuine factory-original products with full manufacturer warranty and technical support.