起订量:
NUCLEOSHELL® 核-壳硅胶键合相液相色谱柱
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生产厂家北京科益恒达科技有限公司是一家服务于实验室分析领域的*公司,公司在分析领域有着多年的经验和积累,并且有着一支年轻而又专业的技术团队做后盾,同时公司与国内外多家生产企业从技术到服务签署了全面的合作协议,更好的保证了产品的质量和稳定。
公司集中优秀科研人员,依托现代生产基地,研制生产的实验仪器产品广泛应用于大专院校、科研机构、石油化工、生物医药、食品安全、环境监测等质量技术分析领域,我们用*的设计理念,科学的管理手法、优质方便的售后服务为广大用户制造满意的产品。*得到了广大合作伙伴的*好评和认可。
公司始终以‘质量*、专业角度、用心服务、互利共赢’为核心价值。相信我们专业的水平和用心的服务会为您提供更为优质的分析环境。
主要产品:
●色谱类:气相色谱仪,液相色谱仪,顶空进样器、热解析仪
●光谱类:紫外分光光度计、原子吸收光谱仪、傅立叶红外光谱 、红外光谱仪
●箱体设备:马弗炉、干燥箱、培养箱、恒温恒湿箱、环境试验箱
●配套设备:氢气发生器、氮气发生器、空气发生器、氧气发生器
●色谱柱:毛细管色谱柱,填充柱,液相色谱柱,凝胶柱,糖柱,氨基酸柱
●样品前处理:固相萃取装置,溶剂过滤器,无油真空泵,超声波清洗器
●常规仪器:纯水机、电子分析天平、PH酸度计
公司代理品牌:安捷伦、岛津、美国SSI、waters、赛分、上海一恒、上海博讯、昆山舒美、上海月旭
产品特点:
NUCLEOSHELL® core-shell silica phases for HPLC |
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Features |
| Core-shell technology: Highest efficiency compared to traditional totally porous materials Pore size 90 Å; particle size 2.7 µm (core 1.7 µm); specific surface 130 m2/g Lower back pressure also allows use on conventional LC systems Pressure stability up to 600 bar |
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Summary of available NUCLEOSHELL® phases | ||||||
Phase | Modification | % C | pH range | Particle size [µm] | USP | Structure |
RP 18 | Octadecyl, multi-endcapping | 7.5 | 1–11 | 2.7 | L1 | |
Phenyl-Hexyl | Phenyl-Hexyl, multi-endcapping | 4.5 | 1-10 | 2,7 | L11 | |
PFP | Pentafluorophenyl, multi-endcapping | ~ 3 | 1–9 | 2.7 | L43 | |
HILIC | Ammonium – sulfonic acid | 1.3 | 2–8.5 | 2.7 | – |
Demands on HPLC separations are constantly increasing with respect to separation efficiency and detection limits as well as concerning the time requirements for each analysis. Core-shell technology sets new standards for increasing efficiency in research and quality control. |
Benefits of core-shell technology | Core-shell particles vs. | |
Short diffusion paths | ||
Rapid mass transfer (C term of the Van Deemter equation) | ||
High flow velocity without peak broadening for fast LC | ||
Narrow particle size distribution (d90/d10 ~ 1.1) | ||
Stable packing | ||
High heat transfer | ||
Minimized influence of frictional heat | ||
Column efficiency of NUCLEOSHELL® ~ 250000/m (HETP ~ 4 µm) |
Resolution Rs as function of particle size | ||
Columns: | 50 x 4 mm | |
Eluent: | acetonitrile – water (60:40, v/v) | |
Peaks: | Better resolution at |