产品名称： Wittig试剂 规　　格： MRJ-02 产品备注： Wittig试剂 产品类别： 化学试剂 产 品 说 明 Wittig反应是醛酮与含磷的试剂

产品名称： VWR防爆防燃冰箱 规　　格： 47747-224 产品备注： VWR特色冰箱 产品类别： 通用实验室仪器设备 产 品 说 明 VWR

产品名称： VWR一次性针头过滤器 规　　格： MHV28138-110 产品备注： 美国VWR 产品类别： 实验室耗材及配件 产 品 说 明   一次性针头过滤器 Supplier:Whatman Hydrophobic PTFE filters for organic-based samples. Units contain two prefilters [graded density multigrade GMF 150 (10:1

产品名称： 细菌酸甲酯 (BAME) 混标 规　　格： Sigma-Aldrich 产品备注： Sigma-Aldrich 产品类别： 化学试剂 产 品 说 明 产品编号 47080-U | Supelco 国内现货 细菌酸甲酯 (BAME) 混标 Bacterial Acid Methyl Ester (BAME) Mix solution (10 mg/mL total concentration in methyl caproate), analytical standard grade analytical standard form solution (10 mg/mL total concentration in methyl caproate) packaging ampule of 1 mL storage temp.

Standards for Sulfur in Diesel Fuel Analysis： Full-range of Sulfur Standards for XRF. ASTM Methods D2622, D4294, D5453, D7039, D7212, D7220 and others. Matrix: See Below Volume: 100mL Concentration Light Mineral Oil Heavy Mineral Oil #2 Diesel Fuel (μg/g) (wt%) Product No. Product No. Product No. Blank Blank SXF20MIN-BLK-100 SXFMIN-BLK-100 SXFDSL-BLK-100 5 0.0005 SXF20MIN-5-100 SXFMIN-5-100 SXFDSL-5-100 10 0.001 SXF20MIN-10-100 SXFMIN-10-100 SXFDSL-10-100 15 0.0015 SXF20MIN-15-100 SXFMIN-15-100 SXFDSL-15-100 20 0.002 SXF20MIN-20-100 SXFMIN-20-100 SXFDSL-20-100 25 0.0025 SXF20MIN-25-100 SXFMIN-25-100 SXFDSL-25-100 50 0.005 SXF20MIN-50-100 SXFMIN-50-100 SXFDSL-50-100 75 0.0075 SXF20MIN-75-100 SXFMIN-75-100 SXFDSL-75-100 100 0.01 SXF20MIN-100-100 SXFMIN-100-100 SXFDSL-100-100 200 0.02 SXF20MIN-200-100 SXFMIN-200-100 SXFDSL-200-100 300 0.03 SXF20MIN-300-100 SXFMIN-300-100 SXFDSL-300-100 400 0.04 SXF20MIN-400-100 SXFMIN-400-100 SXFDSL-400-100 500 0.05 SXF20MIN-500-100 SXFMIN-500-100 SXFDSL-500-100 750 0.075 SXF20MIN-750-100 SXFMIN-750-100 SXFDSL-750-100 1000 0.1 SXF20MIN-1000-100 SXFMIN-1000-100 SXFDSL-1000-100 1500 0.15 SXF20MIN-1500-100 SXFMIN-1500-100 SXFDSL-1500-100 3000 0.3 SXF20MIN-3000-100 SXFMIN-3000-100 SXFDSL-3000-100 5000 0.5 SXF20MIN-5000-100 SXFMIN-5000-100 SXFDSL-5000-100 7500 0.75 SXF20MIN-7500-100 SXFMIN-7500-100 SXFDSL-7500-100 10,000 1 SXF20MIN-1%-100 SXFMIN-1%-100 SXFDSL-1%-100 20,000 2 SXF20MIN-2%-100 SXFMIN-2%-100 SXFDSL-2%-100 30,000 3 SXF20MIN-3%-100 SXFMIN-3%-100 SXFDSL-3%-100 40,000 4 SXF20MIN-4%-100 SXFMIN-4%-100 SXFDSL-4%-100 50,000 5 SXF20MIN-5%-100 SXFMIN-5%-100 SXFDSL-5%-100 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。 北京美同达代理美国销售VHG品牌所有系列标准油，超低折扣，超惠价格！ 详情请致电：010-88482632/52457812/52457811

产品名称： 美国VWR53432-706 规　　格： MHV53432-706 产品备注： 53432-706 产品类别： 实验室耗材及配件 产 品 说 明   VWR

Impact Standards: Charpy V-Notch and Izod Impact Specimens These SRMs are test specimens intended primarily for the verification of Charpy V-Notch testing machines and Izod testing machines. The dimensions of these SRMs comply with the current ASTM Standard E23 and the current ISO 148-1 Standard. SRMs 2092, 2096, and 2098 are NIST-Verification Charpy V-notch specimens that have a post-test evaluation service and proficiency test data available with them. SRMs 2092 and 2096 are to be tested at -40° C; SRM 2098 is to be tested at room temperature (21 °C). These SRMs should be tested (broken) at the same time, then returned to NIST Boulder for evaluation. An acceptable machine will produce an average value within 1.4 J or 5% of the certified energy value, whichever is greater. SRM2092、2096和2098是NIST SRMs 2093 and 2097 are Self-Verification Charpy V-notch specimens that do not have any post-test services available with them. These SRMs provide a lower cost option for the Self-Service user. SRMs 2093 and 2097 are to be tested at -40° C; These SRMs are not returned to NIST Boulder for evaluation. SRMs 2112 and 2113 are NIST-Verification Charpy V-notch specimens that are certified for absorbed energy at two test temperatures and are also certified for maximum force. These SRMs provide a means to verify the performance of the energy and force scales of an instrumented Charpy impact machine at room temperature (21 °C). They can also be used to verify just the energy scale of a machine at -40° C, interchangeably with SRMs 2092 and 2096. Theses SRMs should be tested (broken) at the same time, then returned to NIST Boulder for evaluation. An acceptable machine will produce an average value within 1.4 J or 5% of the certified energy value, whichever is greater. Currently formal bounds are not available to verify the performance of the force scale for a Charpy impact test machine. SRM 2115 is a NIST Izod specimen. Each SRM consists of a set of specimens needed to perform one evaluation. This SRM complies with ASTM Standard E23 dimensional requirements for the Izod (Cantilever Beam) impact specimen, Type D, geometry. PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source. - Certified values are normal font - Reference values are italicized - Values in parentheses are for information only 货号 品名 包装 能量 2092 Low-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 低能量夏比V型缺口冲击试样（NIST-验证） set 13 to 20 2093 Low Energy Charpy V-Notch Impact Specimen (Self- Verification) 低能量夏比V型缺口冲击试样（自我-验证） 5bar 2096 High-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 高能量夏比V型缺口冲击试样（NIST-验证） set 88 to 133 2097 High Energy Charpy V Notch Impact Specimen (Self-Verification) 高能量夏比V型缺口冲击试样（自我-验证） 5bar 2098 SuperHigh-Energy Charpy V-Notch Impact Specimen (NIST-Verification) 超高能量夏比V型缺口冲击试样（NIST-验证） set 176 to 244 2112 Dynamic Impact Force Verific Specimens (Nominal 24kN) 动态冲击力Verific 试样（额定受力24千牛顿） set of four 2113 Dynamic Impact Force Verific, Specimens (Nominal 33kN) 动态冲击力Verific 试样（额定受力33千牛顿） set of four 2115 Low Energy Izod Impact Specimen (NIST-Verification) 低能量艾氏冲击试样（NIST-验证） Set 13 to 25

VWR庐 Digital Mini Incubator The VWR庐 digital incubator offers an economical and space saving solution for microbiology or haematology applications. The temperature can be freely adjusted in increments of 0.1 掳C up to a maximum of 70 掳C. Heating elements are incorporated into the housing base and walls to ensure temperature stability and uniformity. The door of the incubator has a transparent plexiglas庐 window to provide full visibility to samples. The housing and door frame are constructed entirely of epoxy coated mild steel for strength and durability. Digital controls. Personal-sized. The 230V model is CE marked. 鍙傛暟Exterior Dimensions 11.2 x 11 x 13.2"Interior Dimensions 9.0 x 8.7 x 7.9"Temperature Accuracy 卤0.5 at 37掳CTemperature Range Ambient +5掳C to +70掳CTemperature Uniformity 卤0.5 at 37掳CWeight 18 lbs.鍨嬪彿Electrical Capacity VWR Catalog Number Unit230V 10 L 10054-476 Each閰嶄欢鍒嗛殧鏋

产品名称： 美国VWR透析耗材 规　　格： 25225-260 产品备注： 25225-260 产品类别： 实验室耗材及配件 产 品 说 明 Spectra/Por

产品名称： 德国赛多利斯(sartorius)滤膜 规　　格： MC-13006-47 产品备注： 滤膜 产品类别： 实验室耗材及配件   产 品 说 明 超滤是一种膜分离技术，它的特点是使用不对称多孔膜，根据分子的大小来分离溶液中的大分子物质与小分子物质。超滤尤其适用于大分子溶液的浓缩、不同种类分子的纯化以及溶剂交换等。超滤法是一种温和的、非变性的物理方法，比其它分离方法具有效率更高、更灵活的优点。 德国Sartorius（赛多利斯）专业提供微生物实验室用各种滤膜，部分产品国内现货 主要用途：浓缩、梯度分离、脱盐/纯化 超滤法的典型用途： 对蛋白质、酶、DNA、单克隆抗体、免疫球蛋白进行浓缩和脱盐 药物、激素分析 从PCR扩增的DNA中去除引物 去除标记的氨基酸和核苷酸 HPLC样品制备 样品的除蛋白 从生物体液、发酵肉汤培养基中纯化抗生素、激素、药物 从细胞悬液、裂解液中回收生物分子 常规意义的实验室浓缩和脱盐 哺乳动物细胞的收集 清洗细胞、纯化病毒、去除细胞碎片、除热原 11104-47-N 醋酸纤维素膜 100片/盒 11106-47-N 醋酸纤维素膜47mm0.45um 100/PK 11106-50-N 醋酸纤维素膜50mm0.45um 100/PK 11107-47-N 醋酸纤维素膜47mm0.2um 100/PK 11803-13-N 聚四氟乙烯膜 1.2um 13mm 100/盒 13006-47-ACN 黑低白格膜 0.45um 47mm 100片/盒 13806-47-ACN 绿底深绿格膜0.45um/47mm 100片/盒 13806-47-ACR 绿底深绿格膜0.45um/47mm 16508B 可换膜聚碳酸酯滤器50mm 个 5个/盒 16517E 可换膜聚碳酸酯滤器25mm 个 12个/盒 16541K 针头滤器0.2um PES膜 50个/盒 16533K 针头滤器0.45um PES 50个/盒 17597K 针头滤器0.2um CA膜 个 50个/盒 17598K 滤器 醋酸纤维素膜0.45μm，Φ26mm 50个/盒 17804E 气体过滤器62mm 0.45um 个,12个/包 17805E 气体过滤器62mm 0.22um 个 12个/盒 18056D 过滤器Sartolab-P20 Plus 10/包 18406-47N 再生纤维素膜47mm 0.45um 100/包