So I've been dealing with a couple of meters that all give me different readings after being calibrated:
GHL = 34.6 psu, 52.7mS, 1.0245kg/l
Hanna = 35.4ppt
Other probe = 37.3ppt
I bought a Tropic Marin Precision Hydrometer to establish ground truth...
Tropic Marin Precision Hydrometer: 1.02775 @ 25c
Per https://reefapp.net/en/salinity-calculator:
I believe the TM High-precision Hydrometer as truth! Which means:
1. GHL is only good for it's density reading in kg/l.The other measurements seem to not align with standards.
2. Hanna and another probe are off and shouldn't be depended on.
I'm glad to finally have confidence in GHL, now that I know which GHL reading to follow.
I hope this helps others.
GHL = 34.6 psu, 52.7mS, 1.0245kg/l
Hanna = 35.4ppt
Other probe = 37.3ppt
I bought a Tropic Marin Precision Hydrometer to establish ground truth...
Tropic Marin Precision Hydrometer: 1.02775 @ 25c
Per https://reefapp.net/en/salinity-calculator:
I believe the TM High-precision Hydrometer as truth! Which means:
1. GHL is only good for it's density reading in kg/l.The other measurements seem to not align with standards.
2. Hanna and another probe are off and shouldn't be depended on.
I'm glad to finally have confidence in GHL, now that I know which GHL reading to follow.
I hope this helps others.