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MTT一般現(xiàn)用現(xiàn)配,過(guò)濾后4℃,避光保存2周有效,或保存在-20℃長(zhǎng)期保存;避免反復(fù)凍融,最好小劑量分裝,用避光袋、錫箔紙包裹;一般把MTT粉分裝在EP管,再現(xiàn)用現(xiàn)配,當(dāng)MTT變?yōu)榛揖G色時(shí)絕不能再用; MTT致癌,用時(shí)最好帶透明薄膜手套。
WISH細(xì)胞 人羊膜細(xì)胞 WISH細(xì)胞狀態(tài) http://www.afzhan.com/st133337/Product_4637280.html
WISH細(xì)胞/人羊膜細(xì)胞 /WISH細(xì)胞狀態(tài) http://www.afzhan.com/st133337/Product_4623605.html
WISH細(xì)胞/人羊膜細(xì)胞/WISH細(xì)胞價(jià)格 http://www.afzhan.com/st133337/Product_3542743.html
WISH細(xì)胞,人羊膜細(xì)胞 http://www.afzhan.com/st133337/Product_3324666.html
培養(yǎng)基保存于4℃冰箱中,培養(yǎng)基內(nèi)CO2 會(huì)逐漸溢出,造成培養(yǎng)基越來(lái)越偏堿性。而培養(yǎng)基中酸堿指示劑(通常為phenol red)的顏色也會(huì)隨堿性增加而更偏暗紅。
人腦瘤細(xì)胞 SF17細(xì)胞 SF17細(xì)胞狀態(tài) http://www.afzhan.com/st133337/Product_4631261.html
SF17細(xì)胞 人腦瘤細(xì)胞 SF17細(xì)胞價(jià)格 http://www.afzhan.com/st133337/Product_4592151.html
人腦瘤細(xì)胞,SF17細(xì)胞 http://www.afzhan.com/st133337/Product_4383826.html
SF17細(xì)胞 人腦瘤細(xì)胞 http://www.afzhan.com/st133337/Product_3324643.html
培養(yǎng)基偏堿后再用于細(xì)胞培養(yǎng)將造成細(xì)胞生長(zhǎng)停滯或死亡。培養(yǎng)基偏堿時(shí),可以通入無(wú)菌過(guò)濾的CO2,以調(diào)整pH值。
小鼠胚胎成纖維細(xì)胞 MEF細(xì)胞價(jià)格 http://www.afzhan.com/st133337/Product_3324614.html
MMQ細(xì)胞,大鼠垂體瘤細(xì)胞 http://www.afzhan.com/st133337/Product_4591995.html
大鼠垂體瘤細(xì)胞 MMQ細(xì)胞 http://www.afzhan.com/st133337/Product_3324623.html
人多發(fā)性骨髓瘤細(xì)胞 RPMI 8226細(xì)胞 http://www.afzhan.com/st133337/Product_3324637.html
根據(jù)細(xì)胞類(lèi)型、培養(yǎng)方式和生產(chǎn)工藝等特點(diǎn)所定制的培養(yǎng)基,即個(gè)性化培養(yǎng)基。個(gè)性化培養(yǎng)基在國(guó)外生物制藥企業(yè)被普遍采用,個(gè)性化培養(yǎng)基可以為細(xì)胞生長(zhǎng)提供充足的營(yíng)養(yǎng)物質(zhì),能提高細(xì)胞的生長(zhǎng)速率、培養(yǎng)密度、以及延長(zhǎng)細(xì)胞維持時(shí)間;
HT-1080細(xì)胞 人纖維肉瘤細(xì)胞 http://www.afzhan.com/st133337/Product_3324527.html
HT-1080細(xì)胞 人纖維肉瘤細(xì)胞系 http://www.afzhan.com/st133337/Product_3516422.html
HT-1080細(xì)胞,人纖維肉瘤細(xì)胞HT-1080 http://www.afzhan.com/st133337/Product_4591950.html
MDA-MB-157細(xì)胞,人乳腺癌細(xì)胞 http://www.afzhan.com/st133337/Product_3324606.html
也可以為細(xì)胞生長(zhǎng)提供均衡的營(yíng)養(yǎng)供給,減少細(xì)胞有害代謝物質(zhì)的積累,降低對(duì)細(xì)胞生長(zhǎng)的危害;
人B淋巴細(xì)胞瘤細(xì)胞Ramos細(xì)胞 http://www.afzhan.com/st133337/Product_4406894.html
Ramos細(xì)胞 人B淋巴細(xì)胞瘤細(xì)胞 http://www.afzhan.com/st133337/Product_3324336.html
RAMOS(RA.1)細(xì)胞,人B淋巴細(xì)胞瘤細(xì)胞 http://www.afzhan.com/st133337/Product_3324346.html
人喉癌上皮細(xì)胞 Hep-2細(xì)胞培養(yǎng) http://www.afzhan.com/st133337/Product_3324519.html
同時(shí)對(duì)貼壁細(xì)胞而言,能增加細(xì)胞的貼壁性,并降低培養(yǎng)過(guò)程中剪切力對(duì)細(xì)胞的損傷;個(gè)性化培養(yǎng)基可以根據(jù)各戶(hù)的特殊需求減少或不使用動(dòng)物源成分,從而使生物制品安全性更有保障。
全氟消解罐又叫COD樣品消解儀、消解器、高壓消解罐、在海洋研究所用于海洋樣品檢測(cè)尤為廣泛。應(yīng)用于氣象,液相,等離子光質(zhì)譜儀,原子吸收和原子熒光等化學(xué)分析方法的樣品前處理,用于消解農(nóng)殘,食品,稀土,水產(chǎn)品,有機(jī)物種的Pb,Cu,Zn,Ga,Rb,Hg等重金屬。案例:清華大學(xué):COD檢測(cè)。
1.耐高低溫性:可使用溫度-200℃~+250℃。建議在烘箱中180度內(nèi)使用(全氟消解罐)
2.使用方便精密設(shè)備加工內(nèi)壁光滑,不掛水,不混配,密封性能好
3.消解效率高,能力強(qiáng),可消解許多傳統(tǒng)方法難以消解的樣品
4.消耗酸溶劑少,空白值低,提高分析的準(zhǔn)確度和精密度
5.采用全聚四氟乙烯材質(zhì)加工,避免了在實(shí)驗(yàn)中,混入重金屬,從而污染樣品,防污染:金屬元素空白值低。
6.外觀純白色。
7.耐腐蝕:耐強(qiáng)酸、強(qiáng)堿、王水和各種有機(jī)溶劑,且無(wú)溶出、吸附和析出現(xiàn)象。
8.絕緣性:不受環(huán)境及頻率的影響,介質(zhì)損耗小,擊穿電壓高。
9.耐大氣老化,耐輻照和較低的滲透性。
10.自潤(rùn)滑性:具有塑料中最小的摩擦系數(shù)。
11.表面不粘性:是一種表面能最小的固體材料。
12.機(jī)械性質(zhì)較軟,具有非常低的表面能。
13.無(wú)毒害:具有生理惰性
銷(xiāo)售部:
聯(lián)系人: 季小姐
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【Discovery 專(zhuān)業(yè)型分析天平 DV 分析天平(內(nèi)校)0.00001/0.0001g的參數(shù)說(shuō)明】 | |||||||||||||||||||||||
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人棘球蚴IgM抗體酶聯(lián)免疫分析(ELISA)
試劑盒使用說(shuō)明書(shū)
本試劑僅供研究使用 目的:本試劑盒用于測(cè)定人血清,血漿及相關(guān)液體樣本中棘球蚴IgM抗體的含量。
實(shí)驗(yàn)原理:
本試劑盒應(yīng)用雙抗原夾心法測(cè)定標(biāo)本中人棘球蚴IgM抗體水平。用純化的人棘球蚴IgM抗原包被微孔板,制成固相抗原,往包被抗原的微孔中依次加入棘球蚴IgM抗體,再與HRP標(biāo)記的棘球蚴IgM抗原結(jié)合,形成抗原-抗體-酶標(biāo)抗原復(fù)合物,經(jīng)過(guò)洗滌后加底物TMB顯色。TMB在HRP酶的催化下轉(zhuǎn)化成藍(lán)色,并在酸的作用下轉(zhuǎn)化成最終的黃色。顏色的深淺和樣品中的棘球蚴IgM抗體呈正相關(guān)。用酶標(biāo)儀在450nm波長(zhǎng)下測(cè)定吸光度(OD值),通過(guò)標(biāo)準(zhǔn)曲線計(jì)算樣品中人棘球蚴IgM抗體濃度。
試劑盒組成:
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樣本處理及要求:
1. 血清:室溫血液自然凝固10-20分鐘,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過(guò)程中如出現(xiàn)沉淀,應(yīng)再次離心。
2. 血漿:應(yīng)根據(jù)標(biāo)本的要求選擇EDTA或檸檬酸鈉作為抗凝劑,混合10-20分鐘后,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過(guò)程中如有沉淀形成,應(yīng)該再次離心。
3. 尿液:用無(wú)菌管收集,離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清,保存過(guò)程中如有沉淀形成,應(yīng)再次離心。胸腹水、腦脊液參照實(shí)行。
4. 細(xì)胞培養(yǎng)上清:檢測(cè)分泌性的成份時(shí),用無(wú)菌管收集。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。檢測(cè)細(xì)胞內(nèi)的成份時(shí),用PBS(PH7.2-7.4)稀釋細(xì)胞懸液,細(xì)胞濃度達(dá)到100萬(wàn)/ml左右。通過(guò)反復(fù)凍融,以使細(xì)胞破壞并放出細(xì)胞內(nèi)成份。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。保存過(guò)程中如有沉淀形成,應(yīng)再次離心。
5. 組織標(biāo)本:切割標(biāo)本后,稱(chēng)取重量。加入一定量的PBS,PH7.4。用液氮迅速冷凍保存?zhèn)溆谩?biāo)本融化后仍然保持2-8℃的溫度。加入一定量的PBS(PH7.4),用手工或勻漿器將標(biāo)本勻漿充分。離心20分鐘左右(2000-3000轉(zhuǎn)/分)。仔細(xì)收集上清。分裝后一份待檢測(cè),其余冷凍備用。
6. 標(biāo)本采集后盡早進(jìn)行提取,提取按相關(guān)文獻(xiàn)進(jìn)行,提取后應(yīng)盡快進(jìn)行實(shí)驗(yàn)。若不能馬上進(jìn)行試驗(yàn),可將標(biāo)本放于-20℃保存,但應(yīng)避免反復(fù)凍融.
7. 不能檢測(cè)含NaN3的樣品,因NaN3抑制辣根過(guò)氧化物酶的(HRP)活性。
操作步驟
1. 標(biāo)準(zhǔn)品的稀釋與加樣:在酶標(biāo)包被板上設(shè)標(biāo)準(zhǔn)品孔10孔,在、第二孔中分別加標(biāo)準(zhǔn)品100μl,然后在、第二孔中加標(biāo)準(zhǔn)品稀釋液50μl,混勻;然后從孔、第二孔中各取100μl分別加到第三孔和第四孔,再在第三、第四孔分別加標(biāo)準(zhǔn)品稀釋液50μl,混勻;然后在第三孔和第四孔中先各取50μl棄掉,再各取50μl分別加到第五、第六孔中,再在第五、第六孔中分別加標(biāo)準(zhǔn)品稀釋液50ul,混勻;混勻后從第五、第六孔中各取50μl分別加到第七、第八孔中,再在第七、第八孔中分別加標(biāo)準(zhǔn)品稀釋液50μl,混勻后從第七、第八孔中分別取50μl加到第九、第十孔中,再在第九第十孔分別加標(biāo)準(zhǔn)品稀釋液50μl,混勻后從第九第十孔中各取50μl棄掉。(稀釋后各孔加樣量都為50μl,濃度分別為90pg/ml,60pg/ml ,30 pg/ml,15pg/ml , 7.5pg/ml。
2. 加樣:分別設(shè)空白孔(空白對(duì)照孔不加樣品及酶標(biāo)試劑,其余各步操作相同)、待測(cè)樣品孔。在酶標(biāo)包被板上待測(cè)樣品孔中先加樣品稀釋液40μl,然后再加待測(cè)樣品10μl(樣品最終稀釋度為5倍)。加樣將樣品加于酶標(biāo)板孔底部,盡量不觸及孔壁,輕輕晃動(dòng)混勻。
3. 溫育:用封板膜封板后置37℃溫育30分鐘。
4. 配液:將30(48T的20倍)倍濃縮洗滌液用蒸餾水30(48T的20倍)倍稀釋后備用。
5. 洗滌:小心揭掉封板膜,棄去液體,甩干,每孔加滿洗滌液,靜置30秒后棄去,如此重復(fù)5次,拍干。
6. 加酶:每孔加入酶標(biāo)試劑50μl,空白孔除外。
7. 溫育:操作同3。
8. 洗滌:操作同5。
9. 顯色:每孔先加入顯色劑A50μl,再加入顯色劑B50μl,輕輕震蕩混勻,37℃避光顯色15分鐘.
10. 終止:每孔加終止液50μl,終止反應(yīng)(此時(shí)藍(lán)色立轉(zhuǎn)黃色)。
11. 測(cè)定:以空白空調(diào)零,450nm波長(zhǎng)依序測(cè)量各孔的吸光度(OD值)。 測(cè)定應(yīng)在加終止液后15分鐘以?xún)?nèi)進(jìn)行。
注意事項(xiàng):
1. 試劑盒從冷藏環(huán)境中取出應(yīng)在室溫平衡15-30分鐘后方可使用,酶標(biāo)包被板開(kāi)封后如未用完,板條應(yīng)裝入密封袋中保存。
2. 濃洗滌液可能會(huì)有結(jié)晶析出,稀釋時(shí)可在水浴中加溫助溶,洗滌時(shí)不影響結(jié)果。
3. 各步加樣均應(yīng)使用加樣器,并經(jīng)常校對(duì)其性,以避免試驗(yàn)誤差。一次加樣時(shí)間控制在5分鐘內(nèi),如標(biāo)本數(shù)量多,推薦使用排槍加樣。
4. 請(qǐng)每次測(cè)定的同時(shí)做標(biāo)準(zhǔn)曲線,做復(fù)孔。如標(biāo)本中待測(cè)物質(zhì)含量過(guò)高(樣本OD值大于標(biāo)準(zhǔn)品孔孔的OD值),請(qǐng)先用樣品稀釋液稀釋一定倍數(shù)(n倍)后再測(cè)定,計(jì)算時(shí)請(qǐng)乘以總稀釋倍數(shù)(×n×5)。
5. 封板膜只限一次性使用,以避免交叉污染。
6. 底物請(qǐng)避光保存。
7. 嚴(yán)格按照說(shuō)明書(shū)的操作進(jìn)行,試驗(yàn)結(jié)果判定必須以酶標(biāo)儀讀數(shù)為準(zhǔn).
8. 所有樣品,洗滌液和各種廢棄物都應(yīng)按傳染物處理。
9. 本試劑不同批號(hào)組分不得混用。
10. 如與英文說(shuō)明書(shū)有異,以英文說(shuō)明書(shū)為準(zhǔn)。
計(jì)算:
以標(biāo)準(zhǔn)物的濃度為橫坐標(biāo),OD值為縱坐標(biāo),
在坐標(biāo)紙上繪出標(biāo)準(zhǔn)曲線,根據(jù)樣品的OD
值由標(biāo)準(zhǔn)曲線查出相應(yīng)的濃度;再乘以稀釋
倍數(shù);或用標(biāo)準(zhǔn)物的濃度與OD值計(jì)算出標(biāo)
準(zhǔn)曲線的直線回歸方程式,將樣品的OD值
代入方程式,計(jì)算出樣品濃度,再乘以稀釋
倍數(shù),即為樣品的實(shí)際濃度。
(此圖僅供參考)
試劑盒性能:
1.樣品線性回歸與預(yù)期濃度相關(guān)系數(shù)R值為0.92以上。
2.批內(nèi)與批見(jiàn)應(yīng)分別小于9%和15%
檢測(cè)范圍:
3pg/ml -100 pg/ml
保存條件及期:
1.試劑盒保存:;2-8℃。
2.期:6個(gè)月
FOR RESEARCH USE ONLY
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Drug Names
Generic Name:Human echinococcosis IgM antibody (ECH-IgM) ELISA Kit.
Purpose
This kit allows for the determination of ECH-IgM concentrations in Human serum, blood plasma, and other biological fluids.
Principle of the assay
The kit assay Human ECH-IgM level in the sample,use Purified Human ECH-IgM antigen to coat microtiter plate wells, make solid-phase antigen, then add ECH-IgM to wells, Combined ECH-IgM antigen which With HRP labeled , become antigen - antibody - enzyme- antigen complex, after washing Completely, Add TMB substrate solution,TMB substrate becomes blue color At HRP enzyme-catalyzed, reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm. The concentration of ECH-IgM in the samples is then determined by comparing the O.D. of the samples to the standard curve.
Materials provided with the kit
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Specimen requirements
1. serum- coagulation at room temperature 10-20 mins,centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant, If precipitation appeared, Centrifugal again.
2. plasma-use suited EDTA or citrate plasma as an anticoagulant,mix 10-20 mins ,centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant, If precipitation appeared, Centrifugal again.
3. Urine-collect sue a sterile container, centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant, If precipitation appeared, Centrifugal again. The Operation of Hydrothorax and cerebrospinal fluid Reference to it.
4. cell culture supernatant-detect secretory components, collect sue a sterile container, centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant,detect the composition of cells, Dilut cell suspension with PBS(PH7.2-7.4), Cell concentration reached 1 million / ml, repeated freeze-thaw cycles, damage cells and release of intracellular components, centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant, If precipitation appeared, Centrifugal again.
5. Tissue samples- After cutting samples, check the weight,add PBS(PH7.2-7.4), Rapidly frozen with liquid nitrogen, maintain samples at 2-8℃ after melting,add PBS(PH7.4), Homogenized by hand or Grinders, centrifugation 20-min at the speed of 2000-3000 r.p.m. remove supernatant.
6. extract as soon as possible after Specimen collection,and according to the relevant literature, and should be experiment as soon as possible after the extraction. If it can’t, specimen can be kept in -20 ℃ to preserve, Avoid repeated freeze-thaw cycles.
7. Can’t detect the sample which contain NaN3, because NaN3 inhibits HRP active.
Assay procedure
1.Dilute and add sample to Standard: set 10 Standard wells on the ELISA plates coated, add Standard 100μl to the first and the second well, then add Standard dilution 50μl to the first and the second well, mix; take out 100μl form the first and the second well then add it to the third and the forth well separately. then add Standard dilution 50μl to the third and the forth well ,mix ; then take out 50μl from the third and the forth well discard, add 50μl to the fifth and the sixth well ,then add Standard dilution 50μl to the fifth and the sixth well, mix ; take out 50μl from the fifth and the sixth well and add to the seventh and the eighth well, then add Standard dilution 50μl to the seventh and the eighth well ,mix ; take out 50μl from the seventh and the eighth well and add to the ninth and the tenth well, add Standard dilution 50μl to the ninth and the tenth well, mix , take out 50μl from the ninth and the tenth well discard(add Sample 50μl to each well after Diluting ,(density: 90pg/ml,60pg/ml ,30 pg/ml,15pg/ml , 7.5pg/ml)
2.add sample:Set blank wells separately (blank comparison wells don’t add sample and HRP-Conjugate reagent, other each step operation is same). testing sample well. add Sample dilution 40μl to testing sample well, then add testing sample 10μl (sample final dilution is 5-fold), add sample to wells , don’t touch the well wall as far as possible, and Gently mix.
3.Incubate: After closing plate with Closure plate membrane ,incubate for 30 min at 37℃.
4.Configurate liquid: 30-fold (or 20-fold)wash solution diluted 30-fold (or 20-fold) with distilled water and reserve.
5.washing:Uncover Closure plate membrane, discard Liquid, dry by swing, add washing buffer to every well, still for 30s then drain, repeat 5 times, dry by pat.
6.add enzyme:Add HRP-Conjugate reagent 50μl to each well, except blank well.
7.incubate:Operation with 3.
8.washing:Operation with 5.
9.color:Add Chromogen Solution A 50ul and Chromogen Solution B to each well, evade the light preservation for 15 min at 37℃
10.Stop the reaction:Add Stop Solution50μl to each well, Stop the reaction(the blue color change to yellow color).
11.assay:take blank well as zero , Read absorbance at 450nm after Adding Stop Solution and within 15min.
Important notes
1. The kit takes out from the refrigeration environment should be balanced 15-30 minutes in the room temperature, ELISA plates coated if has not use up after opened, the plate should be stored in Sealed bag.
2. washing buffer will Crystallization separation, it can be heated the water helps dissolve when dilute . Washing does not affect the result.
3. add Sample with sampler Each step, And proofread its accuracy frequently, avoids the experimental error. add sample within 5 mins, if the number of sample is much , recommend to use Volley .
4. if the testing material content is excessively higher (The sample OD is bigger than the first standard well ),please dilute Sample (n-fold), Please diluente and multiplied by the dilution factor.(×n×5).
5. Closure plate membrane only limits the disposable use, to avoid cross-contamination.
6. The substrate evade the light preservation.
7. Please according to use instruction strictly, The test result determination must take the microtiter plate reader as a standard.
8. All samples, washing buffer and each kind of reject should according to infective material process.
9. Do not mix reagents with those from other lots.
Take the standard density as the horizontal, the OD value for the vertical ,draw the standard curve on graph paper, Find out the corresponding density according to the sample OD value by the Sample curve, multiplied by the dilution multiple, or calculate the straight line regression equation of the standard curve with the standard density and the OD value ,with the sample OD value in the equation, calculate the sample density, multiplied by the dilution factor, the result is the sample actual density.
Calculate
This chart for reference only
Assay range
3pg/ml -100 pg/ml
Storage and validity
1.Storage: 2-8℃.
2.validity: six months.
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