FTIR Detectability Checker

All results are SIMULATED from HITRAN line data with an ideal instrument model. LOD values are lower bounds (no interferents, baseline drift or reference mismatch). It is not a licensed engineering stamp and not a guarantee.

Free tier: one species at a time, public, no login. Paid plans ($99/month or $1,100/year) are sold through Stripe: monthly · annual. Paid accounts are set up by email after purchase; there is no in-app login or paid-only feature on this page yet. By R. Lance Haney, Ph.D. · more FTIR tools

Noise model: white noise in transmittance, σA ≈ σT/ln 10 (valid for small absorbance). Line data: I. E. Gordon, L. S. Rothman, R. J. Hargreaves, et al., "The HITRAN2024 molecular spectroscopic database," J. Quant. Spectrosc. Radiat. Transfer 353, 109807 (2026).