项目Item 优级纯　　　　　
　　　　　　　　　　　　　　　　　 (GR)
含量Assay ≥99.5%
碱度alkalinity(以OH-计)/（mmol/100g）≤0.058
水分Water ≤0.3%
酸度Acidity(以H+计)/（mmol/100g） ≤0.083
蒸发残渣evaporation residue ≤0.001%

项目 色谱纯
（for HPLC, ≥99.9%）
纯度Purity ≥99.9%
λ H2O reference
紫外吸收UV absorption
λ: 195 nm ≤0.100
λ: 200 nm ≤0.020
λ: 228 nm ≤0.005
透光度transmittance
195 nm, ≥80%
200 nm, ≥95%
228 nm, ≥99%
游离碱free alkali (as NH3) ≤0.0001%
非挥发性物质non-volatile matter ≤0.0002%
游离酸free acid (as CH3COOH) ≤0.001%
水water (Karl Fischer) ≤0.01%
基线漂移baseline drift, (210 nm) ≤12 mAU
荧光奎宁fluorescence (quinine) at 254 nm ≤0.5 ppb
荧光奎宁fluorescence (quinine) at 365 nm ≤0.5 ppb
卤化残留halogenated residue 10 ng/L (as heptachlor epoxide)
UV absorption
HPLC-gradient/210 nm ≤1 mAU
HPLC-gradient/254 nm ≤0.2 mAU

项目 农残级
(for residue analysis)
外观Appearance 无色液体
纯度Purity >99.9% (GC)
色度Color scale <10 APHA
水分Water <0.1 % (Coulometric)
酸度Acidity (CH3COOH) <0.002 %
蒸发残渣Residue after evaporation <0.0005 %
GC/ECD (as lindane): ≤5 ng/L （以杀虫剂林丹计）

品级Grade 光谱纯
(for spectroscopy)
含量assay ≥99.9%
水分water <0.03%
蒸发残渣evaporation residue ≤ 0.0005 %
λ H2O reference
UV absorption
λ: 193 nm A: ≤1.0
λ: 210 nm A: ≤0.30
λ: 220 nm A: ≤0.10
λ: 235 nm A: ≤0.02
λ: 250 nm A: ≤0.01
λ: 400 nm A: ≤0.01
水分Water ≤ 0.01 %
色度Colour ≤ 10 Hazen
酸度Acidity ≤ 0.0005 meq/g
碱度Alkalinity ≤ 0.0002 meq/g
Fluorescence
- as quinine at 254 nm ≤ 1.0 ppb
- as quinine at 365 nm ≤ 1.0 ppb

品级Grade DNA合成级
(for DNA synthesis, ≥99.9% (GC))
纯度Purity (GC) ≥ 99.9 %
红外光谱鉴别Infrared spectrometry Conforms to Structure
酸度Acidity ≤ 0.001 meq/g
碱度Alkalinity ≤ 0.0002 meq/g
蒸发残渣residue on evaporation ≤ 1 mg/l
水分water ≤0.001% (Karl Fischer)