# In-Situ, Inc.

RDO Trio dissolved-oxygen sonde — Salinity-compensated DO measurement, integrated wiper for fouling resistance.


Source: https://en.bioecon.ru/companies/in-situ-inc/
Updated: 2026-08-12

- Country: United States

## Verifiable facts

| Fact | Value | Source |
| --- | --- | --- |
| Founded | 1976 | https://www.privco.com/company/in-situ-inc |
| Certification | EPA-approved luminescence-quenching method for dissolved oxygen measurement | https://in-situ.com/us/rdo-trio, https://media.in-situ.com/FDUAXN8W/as/4ghw3nmz68662679nr882vs5/RDO_Trio_Manual, https://media.in-situ.com/FDUAXN8W/as/rch4sjnpxpmx5n9x9n9qh8r/RDO_Trio_Spec_Sheet |
| Regulatory approval | EPA-approved methodology for dissolved oxygen measurement | https://in-situ.com/us/rdo-trio, https://media.in-situ.com/FDUAXN8W/as/4ghw3nmz68662679nr882vs5/RDO_Trio_Manual, https://media.in-situ.com/FDUAXN8W/as/rch4sjnpxpmx5n9x9n9qh8r/RDO_Trio_Spec_Sheet |
| Funding | Series B funding of $50M (May 2023) | https://www.privco.com/company/in-situ-inc |
| Revenue | $380 million (2024 annual revenue) | https://www.privco.com/company/in-situ-inc |
| Headquarters | Fort Collins, Colorado, United States | https://in-situ.com/us/rdo-trio, https://media.in-situ.com/FDUAXN8W/as/4ghw3nmz68662679nr882vs5/RDO_Trio_Manual |

Independent sources: in-situ.com, media.in-situ.com, privco.com

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