DOD A-A-50975-1985 STIRRER-HOT PLATE MAGNETIC LABORATORY《实验室磁性热搅拌盘》.pdf

1、COMMERCIAL ITEM DESCRIPTION STIRRER-HOT PLATE, MAGNETIC, LABORATORY The General Services Administration has authorized the use of this commercial item description in preference to Military Specification MIL-S-36963A. This commercial item description covers one type of magnetic stirrer-hot plate for

2、use in 1 aboratory procedures. Salient characteristics: Shall be a magnetic stirrer-hot plate, suitable for use in laboratory procedures on 115 volts, 50-60 Hz, AC supply lines. Shall be supplied with a teflon coated magnetic stirring bar with a nominal one or two inch length, or other intermediate

3、length. Shall be capable of stirring and heating simultaneously or of doiny either operation alone. separate on-off switches or integral controls with “off“ positions. The pilot light for the hot plate may be used to indicate heat cycling. The stirring and heating controls shall have separate pilot

4、lights, and Shall be capable of stirring liquids in the viscosity range of 1 to 1500 centipose using the magnetic stirring bar to be supplied. Shall have variable stirring speeds from slow to fast (approximately 950 rpm). The stirring speed for the minimum speed setting shall be approximately 250 rp

5、m or less. Shall permit selection and control of hot plate temperatures up to approximately 750 degrees (F). Shall have at maximum control settings a power consumption of 600 to 865 watts. Shall have a rectangular top surface area of at least 35 square inches with length and width dimensions that ar

6、e at least 5 inches. Shall have maximum overall dimensions of 11 long by 8-1/4 deep by 5-1/2 high inches). Shall as a minimum consist of the following: 1. 2. A metal base with an epoxy, vinyl or baked enamel fini.sh on the exposed surfaces. A top plate fabricated from glass ceramic material or corro

7、sion-resisting steel coated with porcelain enamel material, having on the exposed surface a glazed finish that is smooth, hard, scratch resistant, chemically inert, and does not become permanently discolored because of having been in a heated condition. A lubrication-free motor assembly with a magne

8、t attached to the drive shaft. Shall include a shaded pole, high torque variable speed motor, for whlch a 516 change in motor speed at 50 Hz operation (i,e., from that at 60 Hz) shall be acceptable. 4. A motor speed control with reference graduation markings, that allows variable 3. stepless speeds.

9、 ,- / -. c* FSC 6640 Page 1 of 4 L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- 7 A-A-50775 66 = 7777774 OOKFZ 7. ! incl ude actual test methods , data taken, and test results. Shall be free of rocking and wobbling when placed on a flat surface.

10、Workmanship. appearance or impair its serviceability. - Unit. The stirrer-hot plate shall be free from defects which detract from Each (EA). One stirrer-hot plate, as specified, constitutes one unit. Quality Assurance Provision Responsibility for inspection. Unless otherwise specified in the contrac

11、t or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. contract or purchase order, the contractor may use his own or any facilities sui table for the performance of the inspection requirements specified herein, unless disapproved by

12、 the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppl ies and services conform to prescribed requirements. Except as otherwise specified in the A-A-5097 5 5. A heating element. 6

13、. A heater control with reference graduation markings, that includes an adjustable thermostat to permit selection and control of the top plate temperatures. 7. Separate on-off switches or integral controls with “off“ positions for the st irr i ng and heater control s. 8. Separate pilot or cycle indi

14、cating lights for the stirring and heater control s. 9. A three (3) wire electric power cord with a three (3) blade male connector fitting receptacles described in ANSI C73-11. Shall conform to the applicable requirements of Underwriters Laboratories UL 1262 (Standard for Safety - Laboratory Equipme

15、nt), or UL499 (Standard for Safety-Electric Heating and Appliances), with proof of conformance consisting of one of the following: 1. 2. UL label or UL listing of the product, provided a copy of the UL report is Laboratory report from an independent laboratory, provided a copy is available available

16、 to the procurement officer, upon the latters request. . to the procurement officer upon the latters request. The report shall ts Records. Records of examinations and tests performed by or for the contractor shall be maintained by the contractor and made available to the Government upon the Governme

17、nts request, at any time, or from time to time, during the performance of the contract and for a period of three years after delivery of the supplies to which such records relate. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50775 bb 777777L

18、l OOLOLl7b O H b A-A-50975 Ins ections. Inspections, as used herein, is defined as both examination (such as visua -+- or auditory investigation without the use of special laboratory appliances or procedures) and testing (determination by technical means of physical and chemical properties) of the i

19、tem. Tests. Tests shall be conducted to determine compliance with specification Where feasible, the same sample shall be used for the determination of requirements. two or more test characteristics. Each stirrer-hot plate shall be tested to demonstrate its capability for proper operation. Contractor

20、 certification. The contractor shall certify that the product offered meets the salient Characteristics of this description and conforms to the producers own drawings, specifications, standards, and quality assurance practices. The Government reserves the right to require proof of such conformance p

21、rior to first delivery and thereafter as may be otherwise provided for under tne provisions of the contract Regulatory requirements. If the product covered by this document has been determined by the U. S. Food and Drug Administration to be under its jurisdiction, the offeror/contractor shall comply

22、, and be responsible for cmpl iance by its subcontractors/suppl iers, with the requirements of the Federal Food, Drug and Cosmetic Act, as amended, and regulations promulgated thereunder In addition, the offeror/contractor shall comply, and be responsible for Compliance by its subcontractors/supplie

23、rs, with the requirements of all other applicable Federal, State, and local statutes, ordinances, and regulations. The offeror/contractor is encouraged to use recovered material in accordance with Public Law 94-580 to the maximum extent practical. Federal Food, Drug and Cosmetic Act. 0 Recovered mat

24、erials. Preservation, packaging, packing, labeling, and marking. specified, preservation, packaging, and packing chal 1 be to a degree of protection to Dreclude damaae to containers and/or contents thereof under normal shipping Unless otherwise conditions, handiing, etc., involving shipment from the

25、 supply source to the receiving activity, plus reshipment from receiving activity, and shall conform to rappl icable carriers rules and regulations. Intermediate and exterior package quantities and labeling and marking shall be as specified in the contract and/or order. The following National Stock

26、Number is covered by this document: 6640-00-113-8336 Ordering data (Intermediate/exterior package quanti ties and label ing and marking must be specified in the contract and/or order). i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A- 5097 5 MIL

27、ITARY INTERESTS : Cus tod i ans : Army-bl Navy-MS Air Force-O3 CIVIL AGENCY COORDINATING ACTIVITY: VA-OSS 54448 PREPARING ACTIVITY: DoD -MB Agent : DLA-DM Project No. 6640-1203 *U.S. GOVERNMENT PRINTING OFFICE: 1986 - 606-036/41348 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-