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Brand
CHEMetrics
CHEMetrics is an American maker of water analysis test kits, based in Midland, Virginia. Gordon Rampy founded the company in 1969 and developed the self-filling reagent ampoule, a vacuum-sealed glass ampoule that draws in the sample when its tip is snapped. CHEMetrics kits measure dissolved oxygen, chlorine, ammonia and other parameters, and the company has been part of AquaPhoenix Scientific since 2022. Seven Star LLC is an independent supplier in Muscat. We list CHEMetrics kits for boiler and water treatment users in Oman and the GCC.
Read the full brand profile- 2 products
- 1 category
Brand profile
About CHEMetrics
- Founded
- 1969
- Headquarters
- Midland, USA
- Speciality
- Water analysis test kits
- Listed with us
- 2 products
CHEMetrics products by category
CHEMetrics is an American maker of water analysis test kits, based in Midland, Virginia. Gordon Rampy founded the company in 1969 and developed the self-filling reagent ampoule, a vacuum-sealed glass ampoule that draws in the sample when its tip is snapped. CHEMetrics kits measure dissolved oxygen, chlorine, ammonia and other parameters, and the company has been part of AquaPhoenix Scientific since 2022.
Seven Star LLC is an independent supplier in Muscat. We list CHEMetrics kits for boiler and water treatment users in Oman and the GCC.
CHEMetrics company profile
| Founded | 1969, by Gordon Rampy |
|---|---|
| Location | Midland, Virginia |
| Ownership | AquaPhoenix Scientific, since 2022 |
| Core technology | Self-filling reagent ampoules |
| Product families | CHEMets and Vacu-vials test kits, kits such as the C-7540 and refills such as the R-7540 |
Milestones
- 1969: CHEMetrics is founded.
- 2022: AquaPhoenix Scientific acquires CHEMetrics.
CHEMetrics product series
The C-7540 is a dissolved oxygen comparator kit for 0 to 40 ppb, and the R-7540 is its refill pack of ampoules.
The ampoule is snapped in the sample so it fills under the water surface, which avoids air contact, and the colour is compared with standards. Low ppb dissolved oxygen checks are used to confirm deaerator and oxygen scavenger performance in boiler feedwater.
Where CHEMetrics kits are used
Boiler feedwater, condensate, power plants and water treatment labs.
Ordering CHEMetrics kits: what we need
Send the kit or refill number, range and quantity.
Facts checked against CHEMetrics' published company history, October 2026.
Request a Quote for CHEMetrics Products
Looking for CHEMetrics parts not listed here, or pricing for a project? Send us the part numbers and quantities. Seven Star LLC sources genuine CHEMetrics products for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
Other enquiries: [email protected] · WhatsApp
FAQ
Questions about CHEMetrics
Common questions about CHEMetrics equipment, part numbers and supply to Oman and the GCC.
01What is the difference between CHEMetrics R-7540 and C-7540?
R-7540 is the refill: a pack of self-filling ampoules for the 0 to 40 ppb dissolved oxygen test. C-7540 is the comparator, the set of sealed color standards used to read the result by eye. A laboratory that already owns the comparator and sampling accessories normally reorders only the refill.
02How do I match a refill to an existing CHEMetrics kit?
Use the digits of the catalog number. A kit numbered K-7540 takes refill R-7540 and comparator C-7540. The same R-7540 ampoules are also listed for the 0 to 100 ppb kit K-7599, which is read with comparator C-7599, so the comparator is what sets the range. Order the comparator that matches your kit, because color standards for another range will not give a valid reading.
03Why is sampling so important for ppb dissolved oxygen tests?
At a few parts per billion, air contact for a second or two changes the result. The ampoule should be snapped while immersed in a flowing sample, taken through a sampling tube that excludes air and cooled if the line is hot. Follow the instruction sheet for the kit, which the manufacturer packs with each refill.
04How do CHEMetrics ampoule test kits work?
Each vacuum-sealed ampoule holds a pre-measured reagent. Snapping the tip in the sample draws in the right volume, and the colour is read against a comparator or photometer.
05Is Seven Star LLC a distributor of CHEMetrics?
No. Seven Star LLC is an independent industrial supplier in Muscat and is not an authorized distributor or agent of CHEMetrics. We source CHEMetrics test kits, refills and comparators through commercial channels, check the model or order code against the manufacturer's documentation, and provide the manufacturer's datasheet and the certificates the manufacturer issues with the order on request.