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    海揚詞說--使用TDS測試有哪些注意事項?
    發布時間: 2021-5-30 | 來源:濰坊海揚磁水處理設備有限公司 |  本文被閱讀 0 次
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    (一)測量時的水溫應維持在攝氏25度左右,溫度過高會使TDS值增加,影響正確性。

    (二)液晶屏幕所顯示的數值即為TDS值,若TDS計顯示數字愈高,表示水中的物質愈多。

    (三)一般地區磁化過的自來水平均在250ppm左右,如果是純水系統能減至30ppm以下,當純水的數值超過30ppm時,就必須考慮更換RO濾膜或請技術人員驗修。

    (一)TDS僅能測出水中的可導電物質,但無法測出細菌、病毒等物質。

    (二)單獨依賴TDS水質測試來判斷水質是否能生飲,并不是正確的作法;經高溫無法滅絕的細菌或病毒,必須透過更精密的儀器才能測出來。

    毫克(mg/升表明1升水中有多少毫克溶解性總固體。

    ⑵PPM溶液百萬分率濃度單位。指100萬毫升溶液中含有溶質的毫升數或表明100萬克溶液中含有溶質克數。

    換算關系:1mg/l=1PPM

    4)它和電導率往往存在一種相通的關系,有時候TDS也可以用來表示電導率,兩者的關系:1TDS=2μS

    其中μS為電導率的單位。

    國家標準GB5749-2006生活飲用水衛生標準》中對飲用自來水的溶解性總固體

    影響TDS值測試的因素:(TDS)有限量要求:溶解性總固體≤1000mg/L

    水溫:TDS筆不可用于測量高溫水體(例如:熱開水)

    水的流速:TDS筆不能用于測量晃動較大的水體

    水質污染:TDS筆不能用于測量污染濃度較高的水體

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