ASTM D93闭口闪点参考标准(PMCC)Pensky-Martens Closed Cup Tester 符合国际ASTM D93方法,石油产品闪点的标准试验方法。 检测标准:ASTM-D93 北京美同达科技有限公司可提供美国ASTM标准的闭口闪点参考标油,可提供各种浓度点温度点。
产品名称: 96孔PCR反应板 规 格: MCV-83009-668 产品备注: 产品类别: 实验室耗材及配件 产 品 说 明 Opaque black or white polypropylene PCR plates and optically clear cap closures are suitable for Real Time PCR applications. Plates are compatible with most thermal cyclers and are ideal for high throughput screening thermocycler applications. Smooth, thin, uniform well walls ensure accurate thermal transfer. Wells are slightly raised to accept optically clear strip caps or sealing films. All plates are autoclavable and certified free of RNase, DNase, and human DNA (lot-by-lot certificates available). Thin, flexible, easy-to-cut plates have a working capacity of 200
VWR® Porcelain Evaporating Dishes Chemical-porcelain deep-form dishes feature a lip, round bottom, and glazing inside and out, except for rim. Shallow-form dishes feature a lip, flat bottom, and glazing, except for rim and part of outside bottom. Highly resistant to chemicals. For use in temperatures up to 1150°C (2102°F). Description Capacity Dia. x H VWR Catalog Number Unit Deep Form Dishes 35 mL 60 x 24 mm 89038-076 Case of 24 Pack of 6 Deep Form Dishes 70 mL 75 x 30 mm 89038-078 Case of 24 Pack of 6 Deep Form Dishes 80 mL 80 x 30 mm 89038-080 Case of 24 Pack of 6 Deep Form Dishes 120 mL 94 x 42 mm 89038-082 Case of 24 Pack of 6 Deep Form Dishes 150 mL 100 x 42 mm 89038-086 Case of 12 Pack of 6 Deep Form Dishes 250 mL 115 x 45 mm 89038-088 Case of 12 Pack of 6 Deep Form Dishes 385 mL 145 x 48 mm 89038-090 Case of 12 Each Deep Form Dishes 525 mL 162 x 51 mm 89038-092 Case of 12 Each Deep Form Dishes 765 mL 185 x 54 mm 89038-094 Case of 8 Each Deep Form Dishes 1285 mL 215 x 75 mm 89038-096 Case of 6 Each Deep Form Dishes 2100 mL 265 x 80 mm 89038-098 Case of 4 Each Deep Form Dishes 3250 mL 305 x 95 mm 89038-100 Case of 3 Each Shallow Form Dishes 30 mL 70 x 16 mm 89038-102 Case of 24 Pack of 6 Shallow Form Dishes 50 mL 80 x 20 mm 89038-104 Case of 24 Pack of 6 Shallow Form Dishes 75 mL 90 x 22 mm 89038-106 Case of 24 Pack of 6 Shallow Form Dishes 90 mL 77 x 32 mm 89038-084 Case of 24 Pack of 6 Shallow Form Dishes 100 mL 105 x 23 mm 89038-108 Case of 24 Pack of 6 Shallow Form Dishes 195 mL 120 x 34 mm 89038-110 Case of 12 Pack of 6 Porcelain Evaporating Dishes These dishes with a lip are glazed inside and out, except for the bottom surface. Description Supplier No. VWR Catalog Number Unit Porcelain Evaporating Dishes, 35ml 60mm x 25mm CH0072C 470001-972 Kit of 1 Porcelain Evaporating Dishes, 35ml 60mm x 25mm CH0070A 470199-892 Kit of 1 Porcelain Evaporating Dishes, 75 mL 82 x 32 mm 7-525-2 470020-006 Each Porcelain Evaporating Dishes, 125ml 98mm x 38mm 7-525-3 470020-008 Each Student Grade Porcelain Evaporating Dishes Glazed porcelain dishes with round bottoms and a pouring spout. Description Supplier No. VWR Catalog Number Unit Evaporating Dish, Porcelain, 35 mL 60 mm x 25 mm, Student Grade 4-52500 470104-802 Each Evaporating Dish, Porcelain, 50 mL 70 mm x 28 mm, Student Grade 4-52501 470104-804 Each Evaporating Dish, Porcelain, 75 mL 82 mm x 32 mm, Student Grade 4-52502 470006-200 Each Evaporating Dish, Porcelain, 100 mL 90 mm x 35 mm, Student Grade PED100 470006-202 Each Porcelain Evaporating Dishes With pouring lip. Glazed inside and partly glazed outside 货号 Description Supplier No. VWR Catalog Number Unit Porcelain Evaporating Dishes, Cap., mL: 50 - 60, Dia. x H, mm: 80 x 16 CH0070B 470121-964 Kit of 1 Porcelain Evaporating Dishes, Cap., mL: 100, Dia. x H, mm: 100 x 20 CH0070C 470121-966 Kit of 1 Economy Porcelain Evaporating Dishes Our laboratory porcelain is high-quality, yet affordably priced. Evaporating dishes have a pourout. They are glazed inside and outside, except for the rim. Note: Fragile, use care when handling. 货号 Description Supplier No. VWR Catalog Number Unit Economy Porcelain Evaporating Dishes, Size 000, 35 mL J-276 470190-906 Case of 24 Each Economy Porcelain Evaporating Dishes, Size 00A, 70 mL J-277 470149-020 Case of 24 Each Economy Porcelain Evaporating Dishes, Size 0, 80 mL J-278 470149-552 Case of 24 Each Economy Porcelain Evaporating Dishes, Size 2, 120 mL J-279 470153-510 Case of 24 Each
产品名称: 美国VWR彩色PCR管架 规 格: 80086-078 产品备注: 原装进口 产品类别: 实验室耗材及配件 产 品 说 明 美国VWR彩色PCR管架 Each polypropylene rack holds ninety-six 0.2mL PCR tubes. Ordering Information: Racks are supplied with lids and packaged five per pack and five packs per case. Spectrum pack includes five racks of each fluorescent color. Pict Color Pict Supplier No. VWR Catalog Number Unit Fluorescent Blue R-96-PCR-FB 80086-078 Case of 25 Fluorescent Green R-96-PCR-FG 80086-080 Case of 25 Fluorescent Orange R-96-PCR-FO 80086-084 Case of 25 Fluorescent Pink R-96-PCR-FP 80086-076 Case of 25 Fluorescent Yellow R-96-PCR-FY 80086-082 Case of 25 Spectrum Pack R-96-PCR-FSP 80086-074 Case of 25 北京美同达是美国VWR公司在北方区代理,销售全线美国VWR产品!更多优质产品,优质服务请致电!
CHEMPLEX? THIN-FILM SAMPLE规格:长卷(Continuous Rolls)尺寸:7.6cm x 91.4m常备现货Code tsescription Gauge1XF00 Mylar 2.5u (0.10mil) 美国Chemplex工业公司自1971年成立以来,一直坚持专注于X射线光谱分析的样品制备领域,拥有多系列独有的特色产品线以及产权,以质量和全面的X射线的样品制备产品线享誉全球。美国Chemplex公司一直以产品创新、质量保证、技术支持、服务周到、准时交货为原则,几乎所有的产品有库存。 北京美同达科技有限公司代理美国Chemplex工业公司旗下系列产品:XRF样品杯、XRF样品膜、X-ray光谱仪样本杯、ROHS专用样品杯、符合ROHS方法的PE/PVC高分子聚合物(块/粉)、XRF/XRD化学试剂盒套包装等。配合北京美同达专业供应的美国品牌进口标准油(VHG Labs、Cannon、Conostan等),全线供应给各大中石油、中石化、中海油旗下研发质检实验室,是一家专业的油品实验室进口配件耗材打包供应专家!详情请致电:010-88482632/52457812/52457811/56420090
三聚氰胺是一种化工原料,在奶粉、蛋白粉等食品或饲料中添加三聚氰胺可以造成蛋白质含量达标的假象。因此,三聚氰胺也被称为“蛋白精”,大量摄入会损害健康。 2008年10月7日,国家质量监督检验检疫总局与标准化管理委员会联合发布了《原料乳与乳制品中三聚氰胺检测方法》,即“国标GB/T 22388—2008”。这一新标准制定了高效液相色谱法、液相色谱-质谱/质谱法及气相色谱-质谱联用法三种检测方法与标准,同时明确检测对象及其限量。 1、婴幼儿配方乳粉中三聚氰胺的限量值为1mg/kg,高于1mg/kg的产品一律不得销售。 2、液态奶(包括原料乳)、奶粉、其他配方乳粉中三聚氰胺的限量值为2.5mg/kg,高于2.5mg/kg的产品一律不得销售。 3、含乳15%以上的其他食品中三聚氰胺的限量值为2.5mg/kg,高于2.5mg/kg的产品一律不得销售。 另外,在《2008年度辽宁省饲料产品质量安全监测计划》中,辽宁省动物卫生监督管理局明确规定饲料中搀加的三聚氰胺要低于2mg/kg。 而香港政府于2008年9月22日紧急立法,禁止食物的三聚氰胺含量超标。新法律规定:婴幼儿及孕妇食品,每公斤不能含有超过1毫克的三聚氰胺,食物每公斤不能超过2.5毫克。 在台湾方面,2008年9月24日,行政院卫生署参考国际检验方法和香港最新立法规定,以及会商药物食品检验局与食品工业研究所的专家后,因为难以在短期间内验出2ppm以下之三聚氰胺,为加速检验,因此决定2.5ppm(2,500ppb)为食品残留三聚氰胺的检验判定标准。[28][29]后来因民众担心缘故,目前不允许乳制品类有三聚氰胺验出。 新西兰食品安全局参考欧盟每日容许摄取量标准(每公斤体重每日0.5mg,20公斤的孩童为20*0.5=10mg,70公斤的成人为70*0.5=35mg),决定以一般食物5.0ppm(5,000ppb)、婴儿食品1.0ppm为食品残留三聚氰胺的暂定检验判定标准,市售食物含量低于此值则不再发布确认风险警告,不过若有发现此值会造成民众摄食超过每日容许摄取量的三聚氰胺或者发现有掺假的情况,会随时检讨此值。 美国则是在经过2007年美国宠物食品污染事件后,禁止于饲料中添加三聚氰胺。美国食品及药物管理局(FDA)日前对食物中三聚氰胺的含量订立标准,成人每天食用2.5ppm以下的受污染食物食物(
Acid Number (AN) Reference Materials:酸度 (AN) 标准参考物质VHG Labs提供的酸度标准参考物质适用于石油产品中的酸度测定,符合 ASTM D664/IP 177 (电位滴定法)和ASTM D974 (酸碱指示剂滴定法)的规定。每一瓶标样都会随瓶附带一份分析证书 (COA),证书上的标准值和不确定度,符合 ASTM D664和D974的规定。 Matrix Nominal Value Size Product Number (mg KOH/g)* (grams) Hydrocarbon Oil 0.1 100 AN-0.1-100G Hydrocarbon Oil 0.5 100 AN-0.5-100G Hydrocarbon Oil 1 100 AN-1-100G Hydrocarbon Oil 1.5 100 AN-1.5-100G Hydrocarbon Oil 2 50 AN-2-50G Hydrocarbon Oil 3 50 AN-3-50G 美国VHG Labs参考物质及标样主要包括:1. 氮,硫,氯,金属标准;2. 标准废油分析,单元素磨损金属有机标准,多元素金属磨损标准,内部标准,金属添加剂标准,基体空白和溶剂,稳定磨损金属标准,多元素冷却剂标准,燃料稀释标准,裂纹检测的参考标准,卡尔费休滴定认证参考标准,烟尘含量标准;3.油品物理测试标准:闪点参考资料,粘度参考标准,降凝剂参考资料,浊点参考资料,冰点参考资料,蒸馏标准等。