Those are subjective but there's a good paper on accuracy here https://www.sciencedirect.com/science/article/pii/S0360132320307836# https://www.sciencedirect.co

Those are subjective but there's a good paper on accuracy here https://www.sciencedirect.com/science/article/pii/S0360132320307836# https://www.sciencedirect.com/science/article/pii/S036013232...! tldr for CO2 best is https://www.kaiterra.com/en/laser-egg-co2 https://www.kaiterra.com/en/laser-egg-co2