日本三菱化學(xué) AQUAMICRON 卡爾費(fèi)休試劑Q&A
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KF reagent
Q.01 I want to obtain the material safety data sheet (SDS) of the KF reagent.
Ans.
The SDS is distributed at this site. If you register?here, you will become possible to download in the?page of SDS.
The SDS is distributed at this site. If you register?here, you will become possible to download in the?page of SDS.
Q.02 I want to obtain the study report (COA) of the KF reagent.
Ans.
The study report is distributed at this site. It can be downloaded in the page of?the study report (COA).
The study report is distributed at this site. It can be downloaded in the page of?the study report (COA).
Q.03 Warranty period of the KF reagent?
Ans.
The warranty period is the period after manufacture in the unopened condition as shown below.
The warranty period is the period after manufacture in the unopened condition as shown below.
| Reagents for coulometric titration method | Anolyte/catholyte/electrolyte solutions | 5 years |
| Titrant for volumetric titration method | Titers of 1 mg, 3 mg, 5 mg and 10 mg | 3 years |
| Dehydrating solvent for volumetric titration method | Various | 5 years |
| Water standard sample | Water standard solution of 10 mg | 5 years |
| Water standard solutions of 1 mg, 0.2 mg and 0.1 mg | 3 years | |
| Solid water standard sample | 5 years | |
| Related articles | Standard water-methanol | 3 years |
The lot number shows the alphabets, A, B or C, the month of manufacture, 1, 2, 3, etc., and the first 2 digits of the figure show the year of manufacture (last 2 digits of the year).
Example) D05123 means the manufacture in April 2005.
Q.01我想獲得kf試劑的材料安全數(shù)據(jù)表(sds)。
答。
SDS在本站點(diǎn)分發(fā)。如果您在這里注冊(cè)，您將可以在SDS頁面下載。
Q.02我想要kf試劑的研究報(bào)告(coa)。
答。
研究報(bào)告在本網(wǎng)站發(fā)布。可在研究報(bào)告(COA)頁面下載。
Q.03 kf試劑的保修期?
答。
保修期是指在未開封條件下生產(chǎn)后的保修期，如下圖所示。
Apparatus (moisture measuring system)
Q.01 The method and frequency of calibration of the moisture measuring system?
Ans.
For the measuring system, “calibration” is not necessary, but it is recommended to confirm the accuracy by measuring the standard sample.
In a volumetric titration method, it is important to determine the titer of titrant exactly. It is appropriate to calibrate the system at the time of changing the titrant and once about 2 weeks, but it is more reliable to confirm the accuracy before determination of the sample every day. In a coulometric titration method, the accuracy shall be confirmed by measuring the standard samples or water. In the presence of any abnormality, maintenance shall be conducted by cleaning the electrodes, or changing the reagent to obtain normal values.
For the measuring system, “calibration” is not necessary, but it is recommended to confirm the accuracy by measuring the standard sample.
In a volumetric titration method, it is important to determine the titer of titrant exactly. It is appropriate to calibrate the system at the time of changing the titrant and once about 2 weeks, but it is more reliable to confirm the accuracy before determination of the sample every day. In a coulometric titration method, the accuracy shall be confirmed by measuring the standard samples or water. In the presence of any abnormality, maintenance shall be conducted by cleaning the electrodes, or changing the reagent to obtain normal values.
Q.02 The method of cleaning when the electrode is contaminated?
Ans.
The detecting electrode shall be cleaned by wiping gently with a paper wiper. An extreme change in the distance between platinum electrodes or the way of polishing to scratch the electrode shall be avoided. If the cathode chamber (electrolysis cell) for coulometric titration method is contaminated, it shall be washed with solvents such as alcohols. If it is severely contaminated, it shall be washed gently with a toothbrush immersed in neutral detergent, rinsed gently with water and dried sufficiently. Attention shall be paid not to break the platinum wire.
The detecting electrode shall be cleaned by wiping gently with a paper wiper. An extreme change in the distance between platinum electrodes or the way of polishing to scratch the electrode shall be avoided. If the cathode chamber (electrolysis cell) for coulometric titration method is contaminated, it shall be washed with solvents such as alcohols. If it is severely contaminated, it shall be washed gently with a toothbrush immersed in neutral detergent, rinsed gently with water and dried sufficiently. Attention shall be paid not to break the platinum wire.
Q.03 Is there any difference between the temperature set for water vaporizer and the actual temperature?
Ans.
The set temperature is accurate at the position of thermoelectric couple. Since this is not a thermal analyzer, however, it shall be understood that the set temperature is not strictly consistent with the sample temperature.
The set temperature is accurate at the position of thermoelectric couple. Since this is not a thermal analyzer, however, it shall be understood that the set temperature is not strictly consistent with the sample temperature.
Q.04 oes the flow of the carrier gas influence on the value in the water vaporization method?
Ans.
It was confirmed that the flow within the normal range of use did not influence on the measured values.
It was confirmed that the flow within the normal range of use did not influence on the measured values.
Q.05 I want to purchase the moisture measuring system and equipments.
Ans.
The moisture measuring system is sold by?Nittoseiko Analytech Co., Ltd.. The inquiry about the system is also received by this company.
The moisture measuring system is sold by?Nittoseiko Analytech Co., Ltd.. The inquiry about the system is also received by this company.
Q.06 Trouble shooting when anodic solution becomes brown before end-point or dark brown at end-point in coulometric titration.
Ans.
To shorten an analysis time and/or gain more accurate results by cleaning an electrode tip when dehydration is not completed although Iodine exists sufficiently in excess or dehydration requires a longer time.
To shorten an analysis time and/or gain more accurate results by cleaning an electrode tip when dehydration is not completed although Iodine exists sufficiently in excess or dehydration requires a longer time.
Q.07 Trouble shooting when solvent becomes brown before end-point or dark brown at end-point in volumetric titration.
Ans.
To shorten an analytical time and/or gain more accurate results by cleaning an electrode tip, when dehydration is not completed although Iodine exists sufficiently in excess or dehydration requires a longer time.
To shorten an analytical time and/or gain more accurate results by cleaning an electrode tip, when dehydration is not completed although Iodine exists sufficiently in excess or dehydration requires a longer time.
Q.08 How to validate Moisture Meter by using AQUAMICRON Water Standard.
Ans.
To validate Coulometric moisture meter by using AQUAMICRON Water Standard.
To validate Coulometric moisture meter by using AQUAMICRON Water Standard.
儀器(水分測(cè)量系統(tǒng))
Q.01濕度測(cè)量系統(tǒng)的校正方法和頻率?
答。
對(duì)于測(cè)量系統(tǒng)，不需要“校準(zhǔn)”，但建議通過測(cè)量標(biāo)準(zhǔn)樣品來確認(rèn)精度。
在容量滴定法中，準(zhǔn)確地確定滴定劑的效價(jià)是很重要的。在改變滴定液時(shí)和2周左右對(duì)系統(tǒng)進(jìn)行一次校準(zhǔn)較為合適，但在每天測(cè)定樣品前確認(rèn)準(zhǔn)確度更為可靠。在庫侖滴定法中，應(yīng)通過測(cè)量標(biāo)準(zhǔn)樣品或水來確定準(zhǔn)確度。出現(xiàn)異常時(shí)，應(yīng)通過清洗電極或更換試劑以獲得正常值進(jìn)行維護(hù)。
Q.02電極被污染時(shí)的清洗方法?
答。
檢測(cè)電極應(yīng)用刮紙器輕輕擦拭。應(yīng)避免鉑電極之間的距離或拋光方式發(fā)生極端變化而劃傷電極。庫侖滴定法陰極室(電解槽)如有污染，應(yīng)用酒精等溶劑清洗。如果污染嚴(yán)重，應(yīng)用牙刷浸入中性洗滌劑輕輕清洗，用水輕輕沖洗，并充分晾干。注意不要折斷鉑金線。
Q.03汽化器設(shè)定的溫度與實(shí)際溫度是否有差異?
答。
熱電偶位置設(shè)定溫度準(zhǔn)確。然而，由于這不是一臺(tái)熱分析儀，需要理解的是，設(shè)定的溫度與樣品溫度并不是嚴(yán)格一致的。
Q.04載氣的流量對(duì)水汽化法的數(shù)值有影響嗎?
答。
經(jīng)確認(rèn)，在正常使用范圍內(nèi)的流量對(duì)測(cè)量值沒有影響。
我想采購濕度測(cè)量系統(tǒng)和設(shè)備。
答。
濕度測(cè)量系統(tǒng)由Nittoseiko Analytech Co.Ltd銷售。這個(gè)公司也收到了關(guān)于這個(gè)系統(tǒng)的詢問。
Q.06庫侖滴定中陽極溶液在終點(diǎn)前變成棕色或終點(diǎn)變成深棕色時(shí)的處理問題。
答。
為了縮短分析時(shí)間和/或通過在脫水未完成時(shí)清洗電極尖端來獲得更準(zhǔn)確的結(jié)果，盡管碘存在足夠多或脫水需要更長(zhǎng)的時(shí)間。找到這個(gè)文件。
Q.07在體積滴定中，當(dāng)溶劑在終點(diǎn)前變成棕色或在終點(diǎn)變成深棕色時(shí)，問題的解決。
答。
為了縮短分析時(shí)間和/或通過清洗電極尖端獲得更準(zhǔn)確的結(jié)果，當(dāng)脫水沒有完成時(shí)，盡管碘存在足夠多或脫水需要更長(zhǎng)的時(shí)間。找到這個(gè)文件。
Q.08如何使用AQUAMICRON水標(biāo)驗(yàn)證濕度計(jì)。
答。
用AQUAMICRON水標(biāo)對(duì)庫侖濕度計(jì)進(jìn)行驗(yàn)證。
找到這個(gè)文件。
Q.01濕度測(cè)量系統(tǒng)的校正方法和頻率?
答。
對(duì)于測(cè)量系統(tǒng)，不需要“校準(zhǔn)”，但建議通過測(cè)量標(biāo)準(zhǔn)樣品來確認(rèn)精度。
在容量滴定法中，準(zhǔn)確地確定滴定劑的效價(jià)是很重要的。在改變滴定液時(shí)和2周左右對(duì)系統(tǒng)進(jìn)行一次校準(zhǔn)較為合適，但在每天測(cè)定樣品前確認(rèn)準(zhǔn)確度更為可靠。在庫侖滴定法中，應(yīng)通過測(cè)量標(biāo)準(zhǔn)樣品或水來確定準(zhǔn)確度。出現(xiàn)異常時(shí)，應(yīng)通過清洗電極或更換試劑以獲得正常值進(jìn)行維護(hù)。
Q.02電極被污染時(shí)的清洗方法?
答。
檢測(cè)電極應(yīng)用刮紙器輕輕擦拭。應(yīng)避免鉑電極之間的距離或拋光方式發(fā)生極端變化而劃傷電極。庫侖滴定法陰極室(電解槽)如有污染，應(yīng)用酒精等溶劑清洗。如果污染嚴(yán)重，應(yīng)用牙刷浸入中性洗滌劑輕輕清洗，用水輕輕沖洗，并充分晾干。注意不要折斷鉑金線。
Q.03汽化器設(shè)定的溫度與實(shí)際溫度是否有差異?
答。
熱電偶位置設(shè)定溫度準(zhǔn)確。然而，由于這不是一臺(tái)熱分析儀，需要理解的是，設(shè)定的溫度與樣品溫度并不是嚴(yán)格一致的。
Q.04載氣的流量對(duì)水汽化法的數(shù)值有影響嗎?
答。
經(jīng)確認(rèn)，在正常使用范圍內(nèi)的流量對(duì)測(cè)量值沒有影響。
我想采購濕度測(cè)量系統(tǒng)和設(shè)備。
答。
濕度測(cè)量系統(tǒng)由Nittoseiko Analytech Co.Ltd銷售。這個(gè)公司也收到了關(guān)于這個(gè)系統(tǒng)的詢問。
Q.06庫侖滴定中陽極溶液在終點(diǎn)前變成棕色或終點(diǎn)變成深棕色時(shí)的處理問題。
答。
為了縮短分析時(shí)間和/或通過在脫水未完成時(shí)清洗電極尖端來獲得更準(zhǔn)確的結(jié)果，盡管碘存在足夠多或脫水需要更長(zhǎng)的時(shí)間。找到這個(gè)文件。
Q.07在體積滴定中，當(dāng)溶劑在終點(diǎn)前變成棕色或在終點(diǎn)變成深棕色時(shí)，問題的解決。
答。
為了縮短分析時(shí)間和/或通過清洗電極尖端獲得更準(zhǔn)確的結(jié)果，當(dāng)脫水沒有完成時(shí)，盡管碘存在足夠多或脫水需要更長(zhǎng)的時(shí)間。找到這個(gè)文件。
Q.08如何使用AQUAMICRON水標(biāo)驗(yàn)證濕度計(jì)。
答。
用AQUAMICRON水標(biāo)對(duì)庫侖濕度計(jì)進(jìn)行驗(yàn)證。
找到這個(gè)文件。
Water determination
Q.01 Why the count decreases during determination in a coulometric titration method?
Ans.
This event occurs when the “titration continuation time” is set and becomes lower than the BG level at the start of determination. An extremely low moisture level in the sample and an interfering reaction (oxidation of iodide) with oxidative substances are assumed.
This event occurs when the “titration continuation time” is set and becomes lower than the BG level at the start of determination. An extremely low moisture level in the sample and an interfering reaction (oxidation of iodide) with oxidative substances are assumed.
Q.02 Is 100% of the moisture in the sample extracted in a volumetric titration method?
Ans.
It is desirable to dissolve the sample in a dehydrating solvent, but it is considered that the moisture in the sample can be extracted if it is not dissolved but dispersed uniformly. According to the sample, extraction may be insufficient in the cases of nonuniform liquid or large masses, but the moisture is generally extracted very quickly into dehydrating solvents.
It is desirable to dissolve the sample in a dehydrating solvent, but it is considered that the moisture in the sample can be extracted if it is not dissolved but dispersed uniformly. According to the sample, extraction may be insufficient in the cases of nonuniform liquid or large masses, but the moisture is generally extracted very quickly into dehydrating solvents.
Q.03 Why the value is different between the loss on drying method and the KF method?
Ans.
The circumstances are different according to the sample. If the value is higher in the loss on drying method, loss of substances other than the moisture due to heating is considered. If the value is higher in the KF method, it is considered that interference reactions may occur in the KF reaction. There is a measuring method to prevent interfering reactions. If you are not sure about this matter, please contact us.
The circumstances are different according to the sample. If the value is higher in the loss on drying method, loss of substances other than the moisture due to heating is considered. If the value is higher in the KF method, it is considered that interference reactions may occur in the KF reaction. There is a measuring method to prevent interfering reactions. If you are not sure about this matter, please contact us.
Q.04 The precisions of analysis and the lower limits of quantification of coulometric titration method and volumetric titration method?
Ans.
Various factors, including the type of sample, the amount of moisture, the handling method of samples, the level of proficiency of operation and the conditions of apparatus and reagents, are involved in the precision of analysis and the lower limit of quantification. The measure of the performance of analysis is as shown below.
Measure of the amount of moisture (analytical value) and relative standard deviation
Various factors, including the type of sample, the amount of moisture, the handling method of samples, the level of proficiency of operation and the conditions of apparatus and reagents, are involved in the precision of analysis and the lower limit of quantification. The measure of the performance of analysis is as shown below.
Measure of the amount of moisture (analytical value) and relative standard deviation
水的決心
Q.01為什么庫侖滴定法測(cè)定時(shí)計(jì)數(shù)會(huì)下降?
答。
當(dāng)“滴定持續(xù)時(shí)間”被設(shè)定并在測(cè)定開始時(shí)低于BG水平時(shí)，就會(huì)發(fā)生此事件。假定樣品中的水分水平極低，并與氧化物質(zhì)發(fā)生干擾反應(yīng)(碘化物氧化)。
Q.02樣品中100%的水分是用體積滴定法提取的嗎?
答。
將樣品溶解在脫水溶劑中是可取的，但認(rèn)為樣品中的水分如果不溶解而是均勻分散，則可以提取。根據(jù)樣品，在液體不均勻或質(zhì)量較大的情況下，萃取可能不足，但水分通常很快被提取到脫水溶劑中。
Q.03為什么干燥法和KF法的損失值不同?
答。
情況因樣本而異。如果該值在干燥方法上的損失較高，則考慮由于加熱造成的水分以外的物質(zhì)損失。如果KF法中數(shù)值較高，則認(rèn)為KF反應(yīng)中可能發(fā)生干擾反應(yīng)。有一種防止干擾反應(yīng)的測(cè)量方法。如果您對(duì)此事不確定，請(qǐng)與我們聯(lián)系。
Q.04庫侖滴定法和容積滴定法的分析精度和定量下限?
答。
樣品的種類、水分量、樣品的處理方法、操作熟練程度、儀器和試劑的條件等因素都影響分析的精密度和定量下限。分析性能的度量如下所示。
Q.01為什么庫侖滴定法測(cè)定時(shí)計(jì)數(shù)會(huì)下降?
答。
當(dāng)“滴定持續(xù)時(shí)間”被設(shè)定并在測(cè)定開始時(shí)低于BG水平時(shí)，就會(huì)發(fā)生此事件。假定樣品中的水分水平極低，并與氧化物質(zhì)發(fā)生干擾反應(yīng)(碘化物氧化)。
Q.02樣品中100%的水分是用體積滴定法提取的嗎?
答。
將樣品溶解在脫水溶劑中是可取的，但認(rèn)為樣品中的水分如果不溶解而是均勻分散，則可以提取。根據(jù)樣品，在液體不均勻或質(zhì)量較大的情況下，萃取可能不足，但水分通常很快被提取到脫水溶劑中。
Q.03為什么干燥法和KF法的損失值不同?
答。
情況因樣本而異。如果該值在干燥方法上的損失較高，則考慮由于加熱造成的水分以外的物質(zhì)損失。如果KF法中數(shù)值較高，則認(rèn)為KF反應(yīng)中可能發(fā)生干擾反應(yīng)。有一種防止干擾反應(yīng)的測(cè)量方法。如果您對(duì)此事不確定，請(qǐng)與我們聯(lián)系。
Q.04庫侖滴定法和容積滴定法的分析精度和定量下限?
答。
樣品的種類、水分量、樣品的處理方法、操作熟練程度、儀器和試劑的條件等因素都影響分析的精密度和定量下限。分析性能的度量如下所示。
水分量(解析值)和相對(duì)標(biāo)準(zhǔn)偏差的測(cè)量
Q.05 Operating suggestions for the measurement of trace moisture in plastics.
Ans.
Trace moisture measurement in plastics is one of the important inspection items. Careful operation is needed to protect dried plastics from being affected by moisture absorption.
Trace moisture measurement in plastics is one of the important inspection items. Careful operation is needed to protect dried plastics from being affected by moisture absorption.
Q.06 Do you have any visual instructions for the beginner of KF measurement?
Ans.
It will help you to understand easily once you watch?this instruction video.
It will help you to understand easily once you watch?this instruction video.
Q.05塑料中微量水分測(cè)量的操作建議。
答。
塑料中微量水分的測(cè)定是重要的檢測(cè)項(xiàng)目之一。需要小心操作，以保護(hù)干燥的塑料不受吸濕的影響。
Q.06對(duì)于KF測(cè)量的初學(xué)者，是否有任何直觀的說明?
答。
看完這段教學(xué)視頻，你會(huì)更容易理解。
答。
塑料中微量水分的測(cè)定是重要的檢測(cè)項(xiàng)目之一。需要小心操作，以保護(hù)干燥的塑料不受吸濕的影響。
Q.06對(duì)于KF測(cè)量的初學(xué)者，是否有任何直觀的說明?
答。
看完這段教學(xué)視頻，你會(huì)更容易理解。