美國VHG標油總酸值標樣是一種用于測量化學物質酸度的標準樣品。它的酸值為3.0 mg KOH/g，使用的基質是烴類油。該標樣符合ASTM-D664和D974標準。ASTM-D664是通過電位滴定法測量酸值，而ASTM-D974是通過顏色指示法測量酸值。這兩個標準通常使用20克樣品進行測試。這種標樣廣泛應用于變壓器油等酸值在0.05 mg KOH/g至0.50 mg KOH/g之間的油品。另外，還有一個類似的標準ASTM-D3339，適用于較小樣品的測試。 Acid Number (AN) Reference Standard是VHG Labs的酸值參考標準，包裝規格為100克琥珀色玻璃瓶。它適用于根據ASTM D664/IP 177（通過電位滴定法）或ASTM D974（通過顏色指示法）測定石油產品中的酸值。

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Acid Number (AN) Standard: 3.0 mg KOH/g in Hydrocarbon Oil Synonyms: Potassium hydroxide Product Code VHG-AN-3-50G Product Format Single Solution Matrix Hydrocarbon Oil Product Categories In-service oil analysis, VHG ISO 17034 Pack Size: 50 g 22 in stock Need More? Estimated dispatch In stock and ready for immediate dispatch. To view pricing

The standard range of applications is for oils with an AN between 0.05 mg KOH/g and 0.50 mg KOH/g, which is applicable to the transformer oils. ASTM D3339 is also similar to ASTM D974, but is designed for use on smaller oil samples. ASTM D974 and D664 roughly use a 20 g sample; ASTM D3339 uses a 2.0 g sample, as shown in Table 2. Table 3.

UVISON.com VHG Labs Acid Number (AN) Reference Standard, 3.0 mg KOH/g, 400g Amber Glass Bottle - AN-3-400G - Acid Number (AN) Reference Materials Standard in Huydrocarbon Oil VHG Labs’ AN Reference materials are intended for use in the determination of Acid Number (AN) in petroleum products in accordance with ASTM D664/IP 177 (by potentiometric titration) or ASTM D974 (by color-indicator …

In chemistry, acid value (AV, acid number, neutralization number or acidity) is a number used to quantify the acidity of a given chemical substance. It is the quantity of base (usually potassium hydroxide (KOH)), expressed as milligrams of KOH required to neutralize the acidic constituents in 1 gram of a sample… The acid number is a measure of the number of carboxylic acid groups (-C(=O)OH …

Acid Number (AN) Standard: 3.0 mg KOH/g in Hydrocarbon Oil, 50g