常用水質(zhì)測試盒種類
水質(zhì)測試盒種類繁多,按其可測參數(shù)可達幾十種甚至上百種,而每一個具體參數(shù)又分可以根據(jù)其使用的標準方法與量程分為幾個規(guī)格,常見的水質(zhì)測試盒為余氯測試盒、臭氧測試盒、硬度測試盒(鈣鎂離子測試盒)、二氧化氯測試盒、PH測試盒、氨氮測試盒,金屬離子測試盒(銅、鐵、錳、鉻、鉛、鎘等),非金屬元素測試盒(砷、氟、磷等)等等,應用領(lǐng)域:食品飲料加工行業(yè) 環(huán)保行業(yè) 生活飲用水 循環(huán)用水。
直接加藥顯色法:使用時將相應試劑加入反應管中,使其充分溶解、反應,一定時間后,溶液呈現(xiàn)特殊的顏色,和標準的色卡(或其他)對比可以得到待測濃度。
試紙法:把化學反應從試管里移到濾紙上進行,按反應本質(zhì)說,都是利用迅速產(chǎn)生明顯顏色的化學反應定性或定量檢測待測物質(zhì),使用時將試紙沾上待測溶液,試紙會顯特定顏色,和標準的色卡(或其他)對比可以得到待測濃度。像PH試紙就是典型的這一類產(chǎn)品。
測試管法:測試管法常用的就是選用透光度好的特種玻璃管作為比色測試管,將特制試劑裝入后經(jīng)拉絲工序,在上端形成毛細管狀,易于折斷。使用時把毛細管折斷,將待測液吸入管中與試劑充分反應,溶液顯特定顏色,和標準的色卡(或其他)對比可以得到待測濃度。
滴定法:一般為微型滴定,將標準滴定反應中使用到的試劑配好并封裝,使用簡單滴定工具代替?zhèn)鹘y(tǒng)的滴定管,并簡化計算方法,一般用戶無需專業(yè)的知識一樣可 以取得較高的檢測準度。像硬度檢測等通常采用這種方法。水質(zhì)檢測盒種類繁多,進口產(chǎn)品一般單次檢測成本較高(從幾元到幾十元每次不等 ),可檢測的參數(shù)也較為豐富。
科瑞德公司提供的水質(zhì)測試產(chǎn)品有:
1)余氯速測盒(DPD法): DPD法檢測余氯是目前很準確的現(xiàn)場檢測余氯方法,余氯速測盒就是以DPD法進行余氯檢 測的測試套裝,是衛(wèi)生監(jiān)督部門專用的游泳池水質(zhì)檢測盒。余氯速測盒包括了一個比色皿、兩瓶DPD藥片;檢測范圍:0-1.0mg/L;檢測次數(shù)為:200 次,也就是說每瓶裝有DPD藥片100片。
DPD余氯快速測定試劑盒是由中山大學的專家組和廣東省科學院微生物研究所聯(lián)合研制的一種適合于現(xiàn)場檢測水中余氯含量的便攜型常備試劑,目前是眾多自來水 公司、食品企業(yè)、制藥企業(yè)、水處理工程公司和物業(yè)管理公司用于檢測和監(jiān)測日常水中余氯含量,保證飲水安全健康的常用試劑。
氯消毒劑是目前普遍使用的消毒劑,在自來水、游泳池和餐具等的消毒中被廣泛使用。但是含氯消毒劑在消毒的同時會產(chǎn)生多種副產(chǎn)物,因此,經(jīng)氯化消毒的水質(zhì)安全性日益受到人們的關(guān)注。
余氯含量是評定水消毒效果的一個重要指標。為抑制水中殘留細菌、病毒等微生物的再度繁殖,水經(jīng)過含氯消毒劑消毒一段時間后,應有適量余氯在水中,以保證持 續(xù)的殺菌能力。但是當余氯含量過高時,容易引起水質(zhì)第二次污染,常引發(fā)致癌物質(zhì)的產(chǎn)生,引起溶血性貧血等,對人類健康有一定的危害作用。因此,有效地控制 和檢測余氯含量在供水處理中至關(guān)重要。
水中余氯、總氯的測定,過去廣泛使用的是鄰聯(lián)甲苯胺法和碘量法,這些方法操作繁瑣,分析周期長(需專業(yè)技術(shù)人員),無法滿足對水質(zhì)進行快速、即需即檢的要 求,不適合于現(xiàn)場分析;而且,由于鄰聯(lián)甲苯胺試劑有致癌性,所以在中華人民共和國衛(wèi)生部2001年6月頒布的《生活飲用水衛(wèi)生規(guī)范》中的余氯檢測方法已去 掉鄰聯(lián)甲苯胺法,代之以DPD分光光度法。本產(chǎn)品可有效對各種日常供水,包括自來水、游泳池及餐飲用水等余氯含量進行快速檢測。
2)百靈達水質(zhì)檢測儀: 百靈達水質(zhì)檢測儀(Pooltest 25)目前被各地疾控中心、衛(wèi)生監(jiān)督所、大型游泳館所廣泛應用。
檢測參數(shù):游離氯、總余氯、PH(酚紅)、氰尿酸、溴、堿度、臭氧、銅、鈣、硬度、PHMB、鐵、游離銅、鹽度、硫酸鹽、氯化物等等。
新型的百靈達水質(zhì)檢測儀(Pooltest 25)專業(yè)增強版光度計套件功能強大,具有良好的防水性能,檢測結(jié)果精確,是專業(yè)泳池維護的理想選擇。
這款百靈達水質(zhì)檢測儀能夠覆蓋全面的泳池水質(zhì)檢測項目,包括如磷酸鹽、硫酸鹽等較為特殊的指標,以及如游離余氯及總余氯、pH、檢測項目總數(shù)超過 25項之多。
這款儀器還具有防水USB電腦連接口。儀器本身能夠在機載內(nèi)存中存儲500組檢測結(jié)果,并可以將其傳輸
到電腦數(shù)據(jù)庫、電子數(shù)據(jù)表或多種專業(yè)泳池維護軟件系統(tǒng)中。由于具有IP67的防護等級,Pooltest 25專業(yè)增強版在1米深的水下浸泡半小時后依然可以正常使用。
百靈達水質(zhì)檢測儀的使用非常簡單,內(nèi)置的百靈達化學檢測程序能夠為各類水平的客戶提供完美的檢測結(jié)果。能夠自動設(shè)置和選擇檢測波長,使得整個測量過程十分迅速簡單。
儀器可以由標準5號電池供電使用,或通過USB接口由計算機或外接電源適配器供電。
軟件操作界面有6種語言可選,操作指示清晰的菜單界面非常適合于泳池專業(yè)管理使用。
共有兩款Pooltest 25專業(yè)增強版套件可選,一款隨機提供硬質(zhì)便攜工具箱,另一款提供便攜軟包以及試劑儲存空間。
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