In most labs the reagent inventory is a spreadsheet, a whiteboard on the freezer, and a person who knows. When she goes on leave, the lab runs out of something on a Friday. Titrate tracks every bottle by the milliliter, from the day it is opened, using a small scale under the shelf and a label that scans.

Yuki Sandoval was a lab manager for eight years. She built the first version for her own lab, in a spreadsheet and a kitchen scale. The product now tells a lab what it has, what it is using, and what it will run out of next month, and it orders the replacement with a purchase request a human approves.

Titrate is used in 24 labs. A lab usually saves about a day of staff time per week, and avoids the Friday it used to dread. The company earns on a subscription per lab and takes a small fee on supplier orders, which it publishes.