# SBT Instruments

> SBT Instruments builds BactoBox®, a benchtop instrument that delivers direct bacterial cell counts in cells/mL in about two minutes using impedance flow cytometry. BactoBox® is a faster, more accurate alternative to OD600 (an indirect biomass proxy) and CFU plating (slow and operator-dependent) for microbial process development, fermentation monitoring, and harvest decisions.

## Product

- [BactoBox® product page](https://sbtinstruments.com/product): How BactoBox® works, what it measures, where it fits in a workflow, and full specifications.
- [Request a demo](https://sbtinstruments.com/request-demo): Form to request a hands-on BactoBox® demo with the SBT Instruments team.

## Knowledge — technical articles

- [Understanding BactoBox® cell counts](https://sbtinstruments.com/knowledge/understanding-bactobox-cell-counts): What a BactoBox® cell count is, how impedance flow cytometry works, and how cells/mL compares to OD600, CFU, direct microscopy, and fluorescent flow cytometry.
- [Understanding OD600](https://sbtinstruments.com/knowledge/understanding-od600): How spectrophotometric optical density at 600 nm works, what it actually measures, and the limitations of using it as a proxy for bacterial cell number.
- [Picking the optimal medium](https://sbtinstruments.com/knowledge/picking-optimal-medium): Using direct cell counts to compare growth media and select the medium that maximises cell yield.
- [Improving harvest decisions](https://sbtinstruments.com/knowledge/improving-harvest-decisions): Reading end-of-fermentation BactoBox® vs. CFU patterns to diagnose harvest timing and recover yield.
- [Knowledge hub](https://sbtinstruments.com/knowledge): Index of all technical articles.

## Customer stories

- [Customer stories overview](https://sbtinstruments.com/customer-stories): How research labs and industrial fermentation teams use BactoBox®.
- [HUN-REN](https://sbtinstruments.com/customer-stories/hun-ren): Hungarian Research Network case study.
- [Biose Industrie](https://sbtinstruments.com/customer-stories/biose): Probiotic manufacturing case study.
- [GLBRC](https://sbtinstruments.com/customer-stories/glbrc): Great Lakes Bioenergy Research Center case study.
- [Nordic Microbes](https://sbtinstruments.com/customer-stories/nordic-microbes): Microbial product development case study.

## Company

- [About SBT Instruments](https://sbtinstruments.com/about): Company history, mission, and timeline. Founded in Denmark.
- [Contact](https://sbtinstruments.com/contact): Contact information for sales, support, and general inquiries. Office in Herlev, Denmark.

## Legal

- [Privacy policy](https://sbtinstruments.com/privacy-policy)
- [Terms and conditions of sale](https://sbtinstruments.com/terms)