Thai Wine Association

TWA membership based on compliance and independent approval of the following:

Step 1: Comply with Winemaking Quality Standards as per Charter:

Quality Standard

Requirement

Grapes

Wine must be made only from Thai-grown grapes.

If wine made from less than 90% Thai grapes, following must be stated on the front / back label of the bottle "made from local and imported grapes".

Grape variety

Single variety must contain minimum of 75% of the specified grape

Blend must contain minimum of 80% of the specified grapes

SO₂ levels

< 5g/L sugar	white wines = 210ppm
	red wines = 160ppm

> 5g/L sugar	white wines = 260ppm
	red wines = 210ppm

Volatile Acidity

0.8g/L acetic acid for white wines

1.2g/L acetic acid for red wines

Alcohol Content

± 1% (as per Excise requirements)

Quality Assurance

Head winemaker to sign quality charter

Step 2: Lab Test
An independent authority will verify technical compliance by testing all wines in the laboratory.

Step 3: Site visit
Winery to be visited by an independent authority to ensure quality and safety standards meet standards set out in the Charter.

TWA membership
Wineries that comply with the Charter and pass independent testing of one product will be issued a "Thai Wine Association of Authentication". Every single product has to undergo above requirements and pass in order to be able to use TWA sticker.