Hydrometer & refractometer ABV test validation / White wine

Can I trust the hydrometer & refractometer ABV method to determine the alcohol content of wine? Watch me test white wine! Please watch https://www.youtube.com/watch?v=-mYdE_eq6BU to see me try this method on cheongju (Korean clear rice wine). I found this method on https://homebrewsake.com/measuring-your-sake-%E2%80%93-part-two-percent-alcohol-by-volume/ The calculator is here: http://www.musther.net/vinocalc.html#alcoholcalculation The equipment I used in this video: HYDROMETER https://amzn.to/38zee4d REFRACTOMETER https://amzn.to/38DPEzh REFRACTOMETER CALIBRATION SOLUTION https://amzn.to/2WNxjKq As an Amazon Associate, I earn on qualified purchases.