Method and an apparatus for taking out an average milk sample
proportional to the yield obtained in the milking of a cow
    1.
    发明授权
    Method and an apparatus for taking out an average milk sample proportional to the yield obtained in the milking of a cow 失效
    方法和用于取出与在挤奶中获得的产量成比例的平均牛奶样本的装置

    公开(公告)号:US3995495A

    公开(公告)日:1976-12-07

    申请号:US600552

    申请日:1975-07-31

    CPC分类号: A01J5/01 G01N1/10 G01N33/04

    摘要: An apparatus for taking out an average sample of milk proportional to the yield from the milking of a cow. The apparatus comprises a primary sampling system and a secondary sampling system. The primary sampling system has a chamber into which milk is sucked during the milking of the cow through a first tube terminating at a distance from a superimposed circular cylinder the bottom of which forms a substantially horizontal circular distributor surface which spreads the milk to form a film. A fraction of the film is caught between a first pair of knives, which are not integral with the distributor surface, and passed through a normally open valve into a collecting cup, while the major part of the milk leaves the chamber through a discharge tube in the bottom of the chamber. The secondary sampling system is adapted on completion of the milking to suck the milk from the collecting cup upwards into the chamber through a second tube extending from the bottom of the collecting cup and terminating at a distance from a superimposed second circular cylinder the bottom of which forms a second substantially horizontal circular distribution surface which spreads the milk to form a film. A fraction of that film is caught between a second pair of knives, which are not integral with the second distributor surface, and led down into a test cup, while the major part of the milk from the collecting cup leaves the chamber through the discharge tube in the bottom of the chamber.

    摘要翻译: 一种用于从牛的挤奶中取出与产量成比例的平均牛奶样本的装置。 该装置包括一次采样系统和二次采样系统。 初级取样系统具有一个腔室,在牛奶挤奶过程中,牛奶通过第一管终止,该第一管终止于与叠置的圆柱体相距一定距离处,其底部形成基本上水平的圆形分布器表面,该分布器表面扩展牛奶以形成膜 。 一部分薄膜被夹在第一对不与分配器表面一体的刀子上,并通过常开的阀进入收集杯,而主要部分的奶通过放电管离开室 房间的底部。 第二采样系统适于完成挤奶,以通过从收集杯底部延伸的第二管将从收集杯向上吸入的奶汁向上吸入室中,并从其底部的重叠的第二圆柱体终止一段距离 形成第二基本水平的圆形分布表面,其使牛奶展开以形成薄膜。 该薄膜的一小部分被夹在第二对刀之间,该第二对刀与第二分配器表面不整合,并被引导到测试杯中,而来自收集杯的乳的主要部分通过放电管离开室 在房间的底部。

    Analytical apparatus for serial determination of nitrogen in samples by
the Kjeldahl method
    2.
    发明授权
    Analytical apparatus for serial determination of nitrogen in samples by the Kjeldahl method 失效
    用凯氏定氮法测定样品中氮的分析仪器

    公开(公告)号:US3964869A

    公开(公告)日:1976-06-22

    申请号:US594937

    申请日:1975-07-11

    IPC分类号: G01N31/00 G01N31/16 G01N33/00

    CPC分类号: G01N31/002

    摘要: This invention provides for an analytical apparatus for serial determination of nitrogen in samples by the Kjeldahl method, characterized in that it comprises from 4 to 7 flasks suspended vertically in a rotatable roundabout, each provided with a cover and a side tube extending into a common central container for the collection of combustion products, the roundabout being connected to a device which at regular intervals turns the roundabout one step forward to the next position, means for heating the flasks in one or two of the positions, means for blowing cooling air against the flasks, means for feeding diluent water to the flasks in a following position, means for introducing neutralising chemicals, means for generating and feeding steam to the flasks in the next following position, means for collecting and titrating the distillate, blowing means for emptying the flasks in the last position, and means for opening the covers on completion of the decomposition and for introducing diluent water into the flasks.

    摘要翻译: 本发明提供了一种用于通过凯氏定氮方法连续测定样品中的氮的分析装置,其特征在于,其包括4至7个在垂直方向上悬挂在可旋转的环形交叉口中的烧瓶,每个设置有盖和延伸到公共中心 用于收集燃烧产物的容器,所述环形交叉口连接到以规定间隔将所述迂回转向一步前进到下一位置的装置,用于在一个或两个位置加热所述烧瓶的装置,用于将冷却空气吹向所述装置的装置 烧瓶,用于在随后的位置向稀释水供给稀释水的装置,用于引入中和化学品的装置,用于在下一个位置产生和供给蒸汽的装置,用于收集和滴定馏出物的装置,用于排空烧瓶的吹风装置 在最后的位置,以及在分解完成时打开盖子并引入稀释剂的装置 将水倒入烧瓶中。

    Method for the conditioning of liquid samples
    3.
    发明授权
    Method for the conditioning of liquid samples 失效
    液体样品调理方法

    公开(公告)号:US5798221A

    公开(公告)日:1998-08-25

    申请号:US714140

    申请日:1996-09-16

    摘要: A method is disclosed for conditioning samples (of e.g. milk or meat) containing fat globules and somatic cells and/or protein particles before they are subjected to fluorescence measurements in order to determine the bacterial content, as well as methods for performing the determination of bacterial content in such samples. The conditioning method involves the treatment of the samples with an ion-chelating agent, a proteolytic enzyme, detergent, and a bacteriologically specific fluorochrome such as ethidium bromide. Detergent is used in a concentration resulting in substantially no dissolution of the fat globules and the conditioned samples thus loses insignificant amounts of fat globules. The assessment of fluorescence is preferably performed in a conventional flow cytometer. As no separation of fat globules is necessary, the methods are simple and fast. The bacterial determinations have proved reliable when compared to standard methods.

    摘要翻译: PCT No.PCT / DK95 / 00119 Sec。 371日期1996年9月16日 102(e)日期1996年9月16日PCT 1995年3月16日PCT PCT。 出版物WO95 / 25174 日期1995年9月21日公开了一种方法,用于调节含有脂肪球,体细胞和/或蛋白质颗粒的样品(例如牛奶或肉),然后进行荧光测量以确定细菌含量,以及方法 执行这些样品中细菌含量的测定。 调理方法包括用离子螯合剂,蛋白水解酶,洗涤剂和细菌学特异性荧光染料如溴化乙锭处理样品。 洗涤剂的使用浓度导致脂肪球基本上不溶解,并且调理的样品因此失去微量的脂肪球。 荧光的评估优选在常规流式细胞仪中进行。 由于不需要分离脂肪球,所以方法简便快捷。 与标准方法相比,细菌测定证明是可靠的。