Fluka产商品ABA全是(±)ABA吗?

Are Fluka Commercial Abscisic Acid All(±)ABA?

应用ＧＣ－ＥＣＤ测定了Ｆｌｕｋａ产（±）ＡＢＡ标准品．结果表明，其标准品中只有（＋）ＡＢＡ，而无（－）ＡＢＡ．冬小麦幼苗根提取液ＡＢＡ测定结果与标准ＡＢＡ峰相符。

The standard Fluka commercial ABA was determined by means of GC ECD. The results indicated that there was only one type of ABA,not both(+)ABA and (-)ABA.The determination of ABA which from the roots of winter wheat confessed the results.