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PREPARATION OF FULLERS EARTH
101940 校準(zhǔn)試劑 使用方法
1.1 Health & Safety Precautions 健康與安全措施101940 校準(zhǔn)試劑
The chemicals used when following this procedure are harmful, therefore the correct
safety precautions must be carried out. During handling, avoid inhalation and contact
with the eyes or skin.Wash hands thoroughly after use.Refer to the data sheets for
further details of the chemicals used.
使用該化學(xué)物質(zhì)的過程有害的,因此必須進(jìn)行正確的安全和預(yù)防措施。在使用過程中避免吸入顆粒，禁止接觸皮膚和眼睛，使用后認(rèn)真洗手。
1.2 Method of Preparation制備方法101940 校準(zhǔn)試劑
The Fuller's Earth is supplied in a sealed 20g package, the package contains sufficient
to make a ) solution when combined with 1 litre of water. Alternate solutions can be obtained by increasing the amount of water used as shown in the table below.
20克的校準(zhǔn)物質(zhì)密封于塑料袋中，加入一升的純水可以制備成20,000 mg/l (20 g/l）的校準(zhǔn)溶液。制備其他比例的校準(zhǔn)溶液可通過增加純水的容量來實(shí)現(xiàn)。
| 所需溶液 (g/l) | 添加的水量 (升) |
| 2.5 | 8.0 |
| 5.0 | 4.0 |
| 10.0 | 2.0 |
| 20.0 | 1.0 |
| 40.0 | 0.5 |
The following points should be observed when preparing and using Fullers Earth
solutions:
? The water used should be freshly distilled or de-mineralised
? Ensure the container used for the solution is clean
? During preparation and use, keep the solution covered to prevent contamination
? When using the solution it must be continually stirred to ensure accurate and
consistent measurements and to prevent settling
制備校準(zhǔn)溶液時(shí)需要注意以下幾點(diǎn)：
? 純水是剛蒸餾的去礦物質(zhì)水
? 確保溶液所用的器皿是干凈的
? 制備溶液期間，需要蓋住器皿防止污染
? 使用過程中需要不斷攪拌防止沉淀，以保證校準(zhǔn)液的準(zhǔn)確性和一致性。
101940 校準(zhǔn)試劑 101940 校準(zhǔn)試劑
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