康宁corning 430421 FLASK,ERLEN,125ML,26MM,PLG,PC,
三角培养瓶 125ml 26mm颈瓶直径 密封盖 PC(聚碳酸酯)材质单独包装 (430421/430183/430422/431143/430144/431145-7) 1个/包 50包/箱 3632.33
日度归档:2024年4月5日
淀粉总量检测试剂盒 Total Starch (AA/AMG) Assay Kit 货号:K-TSTA-100A Megazyme中文站
淀粉总量检测试剂盒
英文名:Total Starch (AA/AMG) Assay Kit
货号:K-TSTA-100A
规格:100 assays per kit
分析物意义:主要的食品组分
Megazyme检测试剂盒优点:选择用GOPD试剂或己糖激酶或6-磷酸葡萄糖脱氢酶测定D-葡萄糖的快速检测试剂盒
The Total Starch (AA/AMG) test kit is used for the measurement and analysis of total starch in cereal flours and food products. This kit now contains an improved α-amylase that allows the amylase incubations to be performed at pH 5.0 (as well as pH 7.0).
Colourimetric method for the determination of Total Starch in
cereal products, feeds, foodstuffs and other materials
Principle:
(α-amylase, 100°C ± DMSO)
(1) Starch granules + H2O → maltodextrins
(amyloglucosidase)
(2) Maltodextrins + H2O → D-glucose
(glucose oxidase)
(3) D-Glucose + H2O + O2 → D-gluconate + H2O2
(peroxidase)
(4) 2H2O2 + p-hydroxybenzoic acid + 4-aminoantipyrine →
quinoneimine + 4H2O
Kit size: 100 assays
Method: Spectrophotometric at 510 nm
Total assay time: ~ 90 min
Detection limit: 1-100% of sample weight
Application examples:
Cereal flours, food products and other materials
Method recognition:
AOAC (Method 996.11), AACC (Method 76-13.01), ICC (Standard Method
No. 168), and RACI (Standard Method)
Advantages
- Very competitive price (cost per test)
- All reagents stable for > 12 months after preparation
- Simple format
- Mega-Calc™ software tool is available from our website for hassle-free raw data processing
- Standard included
Q1. Should the pH of the sample be adjusted even for samples in acidic media?
The pH of the assay solution after the sample is added should be the same as that of the assay buffer that is supplied with the kit.
Low sample volumes (e.g. 0.1 mL) are not likely to affect the pH of the assay solution and therefore may not require pH adjustment.
Samples above 0.1 mL are more likely to affect the pH of the assay solution and therefore the pH of these samples should be adjusted as described in the data booklet, prior to addition to the assay.
Q2. Why does the quadruplicate glucose control in your Total Starch Assay Kit have to be incubated?
We feel more comfortable with quadruplicate glucose controls. If the control is incorrect, or questionable, then all the results are in doubt.
Q3. Why do duplicate samples have to be measured?
Duplicate samples do not have to be measured. We just suggest this for laboratories starting up.
Q4. Does the Regular Maize Starch need to be analysed with pre-treating by DMSO? How do you store this Enclosed Control?
The Regular Maize Starch does not require DMSO pre-treatment. The value should be about 84% with a moisture content of about 12%, the final dry weight value is about 96-97%. Store the sample at room temperature, dry.
Q5. There is an issue with the performance of the kit; the results are not as expected.
If you suspect that the Megazyme test kit is not performing as expected such that expected results are not obtained please do the following:
- Ensure that you have tested the standard sample that is supplied with the Megazyme test kit.
- Send the results of the kit standard, blank samples and the results obtained for your sample, in the relevant MegaCalc spreadsheet (if available) to Megazyme (cs@megazyme.com). Where available the relevant MegaCalc spreadsheet can be downloaded from where the product appears on the Megazyme website.
- State the kit lot number being used (this is found on the outside of the kit box).
- State which assay format was used (refer to the relevant page in the kit booklet if necessary).
- State exact details of any modifications to the standard procedure that is provided by Megazyme.
- State the sample type and describe the sample preparation steps if applicable.
Q6. Does your kit with DMSO solubilise starch that has been vitrified due to malting/kilning?
Yes. We believe that the DMSO step will solubilise vitrified starch in malt. Make sure that the malt is milled to pass a 0.5 mm screen. You could vary the time of cooking with DMSO to check solubilisation (i.e. 5 minutes, 10 minutes, or even up to 1 hour).
Q7. Is it possible to differentiate between gelatinised and ungelatinised starch in finished products, such as dog food, using the Total Starch Kit?
We think that there is a better chance of success using the Megazyme Starch Damage Kit.
Q8. Is it possible to use the Total Starch Kit to measure starch levels in plasterboard and related products?
There should be no problem in measuring the starch in plasterboard. I suggest that you grind about 100 g in a kitchen blender and then fine mill to pass 0.5 mm screen. Run a standard assay, but adjust volume to 10 mL after alpha-amylase treatment. Keep a close check on the pH. Plasterboard may push the pH value up (pH up to about 8 should be fine). You may be advised to run a DMSO format concurrently just to be sure. When you treat with amyloglucosidase, I would advise that you take 0.2 and 0.4 mL aliquots of digest (to get the colour up), also, be careful about checking the pH.
Q9. Can the Total Starch Kit be used for samples containing 20% fat or higher?
A 20% fat content could cause a problem for the method. We suggest that the sample be defatted before analysis for starch.
Q10. Do you have any kit or procedures for the determination of extractable starch in corn? This is of particular concern in the corn wet milling. I presume that extractable starch in corn is not the same as total starch?
Our Total Starch Assay Kit could measure starch left in a residue, or starch extracted. No method could measure potential extractable starch, as this will depend on numerous factors, including processing equipment, conditions etc.
Q11. Can I use another buffer instead of the MOPS with your Total Starch Assay Kit? If so, which would be suitable and easily prepared from commonly available laboratory reagents?
You can use phosphate buffer at the same concentration.
Q12. I wish to measure Total Starch in several products. These products contain 10-20% starch + maltodextrins at similar levels. Is it possible to remove the maltodextrins from the sample? Will ethanol work?
Most of the maltodextrins can be removed with 50% ethanol washing. If the starch is not gelatinised, it can be washed with cold water. This will remove all of the soluble maltodextrins, but the starch will spin down. If the starch has been gelatinised, then the best material which can be used for washing is 50% ethanol.
Q13. Could your Total Starch Assay Kit (K-TSTA) be used with success to measure total starch in plant tissues (samples of roots and shoots of maple trees)?
Yes, the Total Starch Kit can be used to measure starch in roots and shoots etc.
Q14. Is the accuracy of the Total Starch test affected by the presence of other inorganic chemicals and ground calcium carbonate in pulp?
We think that calcium carbonate etc. will not cause any problems. However, this of course depends on the amount present and if it changes the pH of the incubation mixture.
Q15. Does the Megazyme Total Starch method work well on all the new chemically modified starches that are now appearing, e.g. highly crosslinked, dextrinised and highly propylene oxide substituted?
The method will work for some chemically modified starches (e.g. crosslinked) however, if the degree of chemical modification is high, there will be an underestimation as the modification will interfere with complete hydrolysis to glucose and subsequent measurement.
Q16. Is it necessary to pre-wash ground cereal samples prior to analysis for Total Starch?
You only need to wash samples which you feel may contain glucose and/or maltodextrins, e.g. breakfast cereals. There is little glucose in ground cereals, so it is not necessary to pre-wash these materials.
Q17. What is the stability of the enzymes from the Total Starch Kit?
The enzymes from this kit are stable at room temperature for at least 6 months. At 4˚C, they are stable for several years.
Q18. Can the Total Starch Kit determine the degree of gelatinisation? Sample : Corn Flour.
The Starch Damage Kit may be best for this. If the starch is gelatinised and dried before analysis the correct results for gelatinisation will not be obtained.
Q19. Are there any limits to the sensitivity of the Total Starch Kit?
The Total Starch Kit can accurately measure starch levels as low as 1% w/w.
Q20. What is the sensitivity and how much is the absorbance of glucose standard (100 micrograms)?
The absorbance for 100 micrograms of glucose (in 3 mL of GOPOD Reagent) is about 0.97.
Q21. Is it possible to raise sensitivity by modifying dilution of GOPOD reagent?
Yes, you can reduce the volume of GOPOD to 1 mL and use micro cuvettes. This will increase sensitivity by ~ 3-fold.
Q22. Does DMSO solubilise resistant starch, i.e. crystallised amylose and amylopectin?
DMSO does solubilise resistant starch (crystallise amylose and amylopectin). The only starch material we have had problems in dissolving in DMSO is potato amylose.
Q23. When analysing samples containing sugars, an 80% v/v solution of ethanol is used to solubilise and remove the sugars. About how large are the smallest dextrins that are left in the starch (not solubilised) in this treatment?
We believe that for starch fragments, oligosaccharides of a DP up to 10 would be soluble in 80% alcohol. The degree of solubility of other oligosaccharides would depend on the sugar type and linkage type.
Q24. What is the sensitivity of the Total Starch Method for measurement in liquids containing low levels of starch?
The Total Starch Kit can be used for liquids containing as little as 200 micrograms per mL with some adjustments of conditions, as below:
Mix 0.5 mL of sample with 0.5 mL of 100 mM sodium acetate buffer (pH 4.5). Incubate at 40˚C and add 0.1 mL of Amyloglucosidase and incubate for 30 minutes. Add GOPOD reagent as usual. You will need to run an AMG blank as this enzyme preparation contains a very small amount of glucose.
Q25. AMYLOGLUCOSIDASE. The activity is stated as being 3260 U/mL (Soluble Starch). How was this determined?
The AMG activity was determined with soluble starch as substrate (10 mg/mL) in 0.1 M sodium acetate buffer at pH 4.5 and 40˚C. One Unit is the amount of enzyme required to hydrolyse one micromole of maltose per minute (i.e. to release 2 micromoles of glucose). Glucose release is measured with Glucose Determination Reagent.
Q26. I wish to know if it is possible to perform the assay under acidic conditions? I also need to alter the pH of the MOPS/amylase mixture to pH 3 or 4. Is it known if the amylase supplied with the Total Starch Assay Kit has activity at such a low pH?
We can assure you that the Total Starch Kit will not work if incubations with the thermostable alpha-amylase are performed at pH 3 or 4. This enzyme is inactivated at pH values below 5.0. You may wish to look at a method using just amyloglucosidase which is quite active down to pH 4.0. Check the old AOAC procedure for starch.
Q27. We are currently using your kits for Total Starch, Starch Damage and Sucrose/Glucose/Lactose Assay procedures. How accurate are the volumes contained? Can they be diluted entirely, to avoid wasting the contents while transferring?
When we dispense the enzymes we usually include an extra 5% in each vial, so yes, you can dilute the whole vial. When you do this, please divide into aliquots and store them frozen.
Q28. Which analytical procedure would you recommend for determination of total starch residues in brewing wort and final beer. Megazyme’s procedure – AA/AMG’97, only refers to solid (and not solubilised) starch.
You can use the standard procedure. We would recommend that you treat 2 mL of beer or wort with 8 mL of ethanol, stir and centrifuge (3,000 rpm). Wash the pellet with 10 mL of 80% ethanol. Then dissolve/suspend the pellet in 2 mL of sodium acetate buffer (pH 4.5, 0.1 M) and cook at 100˚C for 10 min. Then add 0.1 mL AMG from the Total Starch Kit and proceed according to the method. You will have to determine the degree of dilution for yourself. Treat 0.1 mL with GOPOD etc.
プロテイナーゼK溶液|分子生物学基础试剂|生化学试剂-基因工程|试剂|关东化学株式会社
DNase,RNase检测极限以下核酸的炼油最适合
乐途间差距小的契约组合南特酶
配制溶液稀释容易的类型
≧700 U / mL(37℃,hemoglobin)的活性酵素,保证
冷藏(2~8℃)也能够长期保存(保修期是未开封制造至18个月)
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成分表(64种成分)
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草氨酰 |
Nitenpyram |
烯啶虫胺 |
imidacloprid |
吡虫啉 |
Pymetrozine |
吡蚜酮 |
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乙氧嘧磺隆 |
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(E)-Metominostrobin |
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Prometryn |
扑草净 |
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哒菌酮 |
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环虫酰肼 |
Simeconazole |
硅氟唑 |
Tetraconazole |
氟醚唑 |
Naproanilide |
萘丙胺 |
Tebuconazole |
戊唑醇 |
Pirimiphos-methyl |
甲基嘧啶磷 |
Triflumizole |
氟菌唑 |
Benzofenap |
吡草酮 |
Quizalofop-ethyl |
喹禾灵 |
Dinotefuran |
呋虫胺 |
Thiamethoxam |
噻虫嗪 |
Clothianidin |
噻虫胺 |
Trinexapac-ethyl |
抗倒酯 |
Metribuzin |
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Bromacil |
除草定 |
Bendiocarb |
恶虫威 |
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呋吡菌胺 |
Cyproconazole |
环唑醇 |
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茚草酮 |
Diflubenzuron |
二氟脲 |
Tetrachlorvinphos(CVMP) |
杀虫畏 |
Cyprodinil |
嘧菌环胺 |
Fentrazamide |
四唑酰草胺 |
Etobenzanid |
乙氧苯草胺 |
Oxadiargyl |
丙炔恶草酮 |
Phoxim |
辛硫磷 |
Pyrazolynate(Pyrazolate) |
苄草唑 |
Difenoconazole |
苯醚甲环唑 |
Oxaziclomefone |
恶嗪草酮 |
Pentoxazone |
戊基恶唑酮 |
Clomeprop |
氯甲酰草胺 |
Silafluofen |
氟硅菊酯 |
MCPA(MCP) |
2-甲-4-苯氧基乙酸 |
Dichlorprop |
2,4-滴丙酸 |
Propanil(DCPA) |
敌稗 |
Inabenfide |
抗倒胺 |
Tiadinil |
噻酰菌胺 |
Thifluzamide |
噻呋酰胺 |
Flusulfamide |
磺菌胺 |
Tebufenozide |
虫酰肼 |
Fluazinam |
氟啶胺 |
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商品代码其他情报(式样)
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上海金畔生物科技有限公司
498%2F%3Fc%3D34& ” 498%2F%3Fc%3D34&
甜叶菊提取物
产品编号 | 产品名称 | 产品规格 | 产品等级 | 产品价格 |
048-31211 | Dulcoside A Standard 杜克甙A标准品 |
25 mg | for Food Analysis | – |
044-31213 | Dulcoside A Standard 杜克甙A标准品 |
100 mg | for Food Analysis | – |
098-05681 | Isosteviol Standard 异甜菊苷标准品 |
1 g | for Stevioside Determination | – |
189-02581 | Rebaudioside A Standard 莱苞迪甙A标准品 |
100 mg | for Food Analysis | – |
185-02583 | Rebaudioside A Standard 莱苞迪甙A标准品 |
1 g | for Food Analysis | – |
188-02551 | Rebaudioside B Standard 莱苞迪甙B标准品 |
25 mg | for Food Analysis | - |
184-02553 | Rebaudioside B Standard 莱苞迪甙B标准品 |
100 mg | for Food Analysis | – |
181-02541 | Rebaudioside C 莱苞迪苷C |
25 mg | for Food Analysis | - |
180-02511 | Rebaudioside D 莱苞迪甙D |
5 mg | for Food Analysis | - |
186-02611 | Rebaudioside F 莱苞迪甙F |
5 mg | for Food Analysis | - |
187-02521 | Rubusoside Standard 甜茶苷标准品 |
25 mg | for Food Analysis | - |
183-02523 | Rubusoside Standard 甜茶苷标准品 |
100 mg | for Food Analysis | - |
192-15701 | Steviol Standard 甜菊糖标准品 |
25 mg | for Food Analysis | - |
198-15703 | Steviol Standard 甜菊糖标准品 |
100 mg | for Food Analysis | - |
199-15691 | Steviolbioside Standard 甜菊双糖甙标准品 |
25 mg | for Food Analysis | - |
195-15693 | Steviolbioside Standard 甜菊双糖甙标准品 |
100 mg | for Food Analysis | - |
199-16291 | Stevioside Standard 甜叶菊甙元标准品 |
100 mg | for Food Analysis | - |
甜叶菊提取物
甜叶菊原产于南美洲的菊科植物。此甜菊叶子中含有甜味成分,如甜菊糖、甜菊糖苷、甜菊双糖甙、杜克甙A、莱苞迪甙A(B、C、D、E、F)等。甜菊提取物被收录于第八版食品添加物法定文件,作为低卡路里天然甜品调味剂被广泛使用。同时,第68次JECFA(WHO/FAO食品添加物委员会)中,正式决定甜叶菊提取物的规格。
◆产品规格说明
实验项目 |
异甜菊苷标准品 098-05681 |
莱苞迪甙A标准品 189-02581 |
莱苞迪甙 B标准品 188-02551 |
甜茶苷标准品 187-02521 |
外观 (JIS K8001 5.1) |
白色结晶状粉末 |
白色结晶状粉末 |
白色结晶状粉末 |
白色结晶状粉末 |
溶解性 |
通过(1,4-二恶烷中) |
通过(水-甲醇混合液中) |
通过(甲醇中) |
通过(甲醇中) |
熔点 |
229~232°C (JIS K0064 3.2) |
– |
– |
– |
比旋光度(20°C ) |
-77.5~-80.5°C (乙醇中) |
– |
实验结果报告
|
实验结果报告
|
干燥后减少量(105°C JIS K0067) |
5.0%以下 |
6.0%以下 |
5.0%以下 |
5.0%以下 |
薄层色谱测试 |
通过 |
通过 |
通过 |
通过 |
纯度 |
98.0+%(HPLC) 98.0+%(容量分析) |
99.0+%(HPLC) |
98.0+%(HPLC)
|
98.0+%(HPLC)
|
◆新产品
莱苞迪甙C
外观:白色,结晶粉
实验(HPLC):94%(第一批)
化学结构式:
莱苞迪甙F
外观:白色,结晶粉
实验(HPLC):78.2%(第一批)
化学结构式:
甜叶菊甙元标准品
外观:白色粉末
实验(HPLC):>99.0%
化学结构式:
◆产品名称
产品编号 |
产品名称 |
中文名称 |
包装 |
是否为JECFA列表中 |
048-31211 |
Dulcoside A Standard, 98.0+% (HPLC) |
杜克甙A标准品 |
25 mg |
是 |
044-31213 |
Dulcoside A Standard, 98.0+% (HPLC) |
杜克甙A标准品 |
100 mg |
是 |
098-05681 |
Isosteviol Standard, 98.0+% (HPLC)(dry basis) |
异甜菊苷标准品 |
1 g |
否 |
189-02581 |
Rebaudioside A Standard, 99.0+% (HPLC) |
莱苞迪甙A标准品 |
100 mg |
是 |
185-02583 |
Rebaudioside A Standard, 99.0+% (HPLC) |
莱苞迪甙A标准品 |
1 g |
是 |
188-02551 |
Rebaudioside B Standard, 98.0+% (HPLC) |
莱苞迪甙B标准品 |
25 mg |
是 |
184-02553 |
Rebaudioside B Standard, 98.0+% (HPLC) |
莱苞迪甙B标准品 |
100 mg |
是 |
181-02541 |
Rebaudioside C, 90.0+% (HPLC) |
莱苞迪甙C |
25 mg |
是 |
180-02511 |
Rebaudioside D |
莱苞迪甙D |
5 mg |
是 |
186-02611 |
Rebaudioside F |
莱苞迪甙F |
5 mg |
是 |
187-02521 |
Rubusoside Standard, 98.0+% (HPLC) |
甜茶苷标准品 |
25 mg |
是 |
183-02523 |
Rubusoside Standard, 98.0+% (HPLC) |
甜茶苷标准品 |
100 mg |
是 |
192-15701 |
Steviol Standard, 99.0+% (HPLC) |
甜菊糖标准品 |
25 mg |
是 |
198-15703 |
Steviol Standard, 99.0+% (HPLC) |
甜菊糖标准品 |
100 mg |
否 |
199-15691 |
Steviolbioside Standard, 98.0+% (HPLC) |
甜菊双糖甙标准品 |
25 mg |
是 |
195-15693 |
Steviolbioside Standard, 98.0+% (HPLC) |
甜菊双糖甙标准品 |
100 mg |
是 |
199-16291 |
Stevioside Standard, 99.0+% (HPLC) |
甜叶菊甙元标准品 |
100 mg |
是 |
BD培养基 292848 2 kg EA Difco PAIL TAT BROTH TAT肉汤
BD培养基 292848 2 kg EA Difco PAIL TAT BROTH TAT肉汤
Whatman 滤膜 1810-125 酸处理过的低金属含量TCLP圆片,125mm/50
Whatman 滤膜 1810-125 酸处理过的低金属含量TCLP圆片,125mm/50 TCLP 125MM 50/PK
康宁corning 3628BC PLT,96WL,FLAT,BOTTOM,TCT,W/ GENERIC BC,W/LID,S,BK,20/100 20个/包
康宁corning 3628BC PLT,96WL,FLAT,BOTTOM,TCT,W/ GENERIC BC,W/LID,S,BK,20/100 20个/包 5包/箱 7557.59
Whatman 滤膜 10462208 30MM 0.2 UM CA DLL 500/PK FREN
Whatman 滤膜 10462208 30MM 0.2 UM CA DLL 500/PK FREN 30MM 0.2 UM CA DLL 500/PK FREN
Axygen PCR-SP ELISA assay,聚酯,80um 100张/盒,5盒/箱
Axygen PCR-SP ELISA assay,聚酯,80um 100张/盒,5盒/箱 2518.66
Pall颇尔滤膜 61302 SUPOR MEMBRANE 0.8/0.2UM PK5
Pall颇尔滤膜 61302 SUPOR MEMBRANE 0.8/0.2UM PK5 156 1249
NISSUI 日本日水培养基 05130 Rappaport-Vassiliadis Broth (RV) “Nissui”
Research Diets 高脂饲料现货-上海金畔生物
Research Diets 高脂饲料现货-上海金畔生物
上海金畔生物代理Research Diets品牌造模饲料,欢迎新老客户访问Research Diets官网或者咨询我们获取更多产品信息。
Research Diets造模饲料现货
Research Diets造模饲料价格
货号 | 品名 | 品牌 | 规格 |
A02082002B | Methionine and Choline Deficient L-Amino AcidDiet | Research Diets | 12.5kg |
A02082003B | control diet | Research Diets | 12.5kg |
A06071302 | L-Amino Acid Diet with 60 kcal% Fat With 0.1% Met | Research Diets | 12.5kg |
A06071306 | L-Amino Acid Diet with 60 kcal% Fat With 0.1% Met With Normal Choline and Methionine (match to A06071302) | Research Diets | 12.5kg |
C30362 | Purina #5322 Rabbit Chow With 6% Hydrogenated Coconut Oil and 2% Cholesterol | Research Diets | 12.5kg |
D05010402 | 45 Kcal% (Rodent Diet With 45 kcal% Fat Without Added Choline | Research Diets | 12.5kg |
D08090903N | AIN-76A Rodent Diet with No Added Vitamin D | Research Diets | 12.5kg |
D09100301 | 40 kcal% Fat (Mostly Vegetable Shortening) | Research Diets | 12.5kg |
D10001 | AIN-76A | Research Diets | 12.5kg |
D10012G | AIN-93G | Research Diets | 12.5kg |
D10012M | AIN-93M | Research Diets | 12.5kg |
D12079B | Western Diet | Research Diets | 12.5kg |
D12108C | Clinton/ Cybulsky 40%Fat | Research Diets | 12.5kg |
D12109C | 40 kcal% Fat,1.25% Cholesterol, 0.5% Cholic Acid | Research Diets | 12.5kg |
D12266B | Condensed Milk Diet | Research Diets | 12.5kg |
D12328 | 11% fat w/cornstarch | Research Diets | 12.5kg |
D12329 | 11% fat w/sucrose | Research Diets | 12.5kg |
D12330 | 58% fat w/cornstarch | Research Diets | 12.5kg |
D12331 | 58% fat w/sucrose | Research Diets | 12.5kg |
D12336 | Paigen Atherogenic Diet | Research Diets | 12.5kg |
D12450B | 10 kcal% Fat | Research Diets | 12.5kg |
D12450J | rodent diet with 10% kcal% fat | Research Diets | 12.5kg |
D12451 | 45 kcal% Fat | Research Diets | 12.5kg |
D12468 | Rodent Diet With 10 kcal% Soy Protein and 48 kcal% Lard | Research Diets | 12.5kg |
D12489B | D12266B Low Fat Control | Research Diets | 12.5kg |
D12492 | 60 kcal% Fat | Research Diets | 12.5kg |
Whatman 滤膜 1002-270 2号滤纸圆型270mm/100
Whatman 滤膜 1002-270 2号滤纸圆型270mm/100 GR 2 27.0CM 100/PK
康宁corning 431406 FLASK,ERLENMEYER,250mL,BAFFLED 三角培养瓶250ml 缓冲底 密闭盖 灭菌 1个/包
康宁corning 431406 FLASK,ERLENMEYER,250mL,BAFFLED
三角培养瓶250ml 缓冲底 密闭盖 灭菌 1个/包 50包/箱 4359.67
Whatman 滤膜 10404012 OE67醋酸纤维素膜 圆型, 0.45m, 47mm 100/盒
Whatman 滤膜 10404012 OE67醋酸纤维素膜 圆型, 0.45m, 47mm 100/盒 OE67 0.45uM 47MM 100/PK
Whatman 滤膜 29024816 GD/X 25/0.2 NYL 150/PK PROMO
Whatman 滤膜 29024816 GD/X 25/0.2 NYL 150/PK PROMO GD/X 25/0.2 NYL 150/PK PROMO
蛋白酶检测底物 AZCL-Collagen 4g 货号:I-AZCOL Megazyme中文站
蛋白酶检测底物
英文名:AZCL-Collagen 4g
货号:I-AZCOL
规格:4g
蛋白酶检测底物
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whatman GF/C玻璃微纤维滤纸圆型 1822-047 4.7CM 100/PK
whatman GF/C玻璃微纤维滤纸圆型 1822-047 4.7CM 100/PK
whatman | 滤膜滤纸滤器 | 1822-021 | GF/C 2.1CM 100/PK | GF/C玻璃微纤维滤纸圆型21mm/100 |
whatman | 滤膜滤纸滤器 | 1822-024 | GF/C 2.4CM 100/PK | GF/C玻璃微纤维滤纸圆型24mm/100 |
whatman | 滤膜滤纸滤器 | 1822-025 | GF/C 2.5CM 100/PK | GF/C玻璃微纤维滤纸圆型25mm/100 |
whatman | 滤膜滤纸滤器 | 1822-037 | GF/C 3.7CM 100/PK | GF/C玻璃微纤维滤纸圆型37mm/100 |
whatman | 滤膜滤纸滤器 | 1822-042 | GF/C 4.25CM 100/PK | GF/C玻璃微纤维滤纸圆型42.5mm/100 |
whatman | 滤膜滤纸滤器 | 1822-047 | GF/C 4.7CM 100/PK | GF/C玻璃微纤维滤纸圆型47mm/100 |
whatman | 滤膜滤纸滤器 | 1822-050 | GF/C 5CM 100/PK | GF/C玻璃微纤维滤纸圆型50mm/100 |
whatman | 滤膜滤纸滤器 | 1822-055 | GF/C 5.5CM 100/PK | GF/C玻璃微纤维滤纸圆型55mm/100 |
whatman | 滤膜滤纸滤器 | 1822-070 | GF/C 7CM 100/PK | GF/C玻璃微纤维滤纸圆型70mm/100 |
whatman | 滤膜滤纸滤器 | 1822-090 | GF/C 9CM 100/PK | GF/C玻璃微纤维滤纸圆型90mm/100 |
whatman | 滤膜滤纸滤器 | 1822-100 | GF/C 10CM 100/PK | GF/C玻璃微纤维滤纸圆型100mm/100 |
whatman | 滤膜滤纸滤器 | 1822-110 | GF/C 11CM 100/PK | GF/C玻璃微纤维滤纸圆型110mm/100 |
whatman | 滤膜滤纸滤器 | 1822-125 | GF/C 12.5CM 100/PK | GF/C玻璃微纤维滤纸圆型125mm/100 |
whatman | 滤膜滤纸滤器 | 1822-150 | GF/C 15CM 100/PK | GF/C玻璃微纤维滤纸圆型150mm/100 |
whatman | 滤膜滤纸滤器 | 1822-185 | GF/C 18.5CM 100/PK | |
whatman | 滤膜滤纸滤器 | 1822-320 | GF/C 32CM 100/PK | GF/C玻璃微纤维滤纸圆型320mm/100 |
whatman | 滤膜滤纸滤器 | 1822-6580 | GF/C 2.5CM 400/PK | 0 |
whatman | 滤膜滤纸滤器 | 1822-849 | GF/C 10.2×25.4CM 50/PK | GF/C玻璃微纤维滤纸方形102x254mm/50 |
whatman | 滤膜滤纸滤器 | 1822-866 | GF/C 8x10IN 100/PK | GF/C玻璃微纤维滤纸方形8x10inch/100 |
whatman | 滤膜滤纸滤器 | 1822-915 | GF/C 46x57CM 25/PK | GF/C玻璃微纤维滤纸方形 460 x 570 mm/ 25 |
whatman | 滤膜滤纸滤器 | 1822-9916 | GF/C 10CM INDIV PACK 100/PK | GF/C玻璃微纤维滤纸圆片,10mm,每个独立包包装/100 |