一、简介：

农药冻融稳定性试验箱依据NYT 2989-2016 农药登记产品规格制定规范设计制造。用于微囊液体制剂的冻融稳定性试验，压缩机、加热部分、电源控制部分均采用进口件，高质量、高性能。满载运转时冻融箱内各点温度极差不超过1℃。自动控制，数据曲线实时动态显示、试验数据自动存储，具有试验意外终止自动恢复功能。

微囊液体制剂等应进行冻融稳定性试验。试验目的是确保成囊制剂在温度变化时囊的完整性，以确保有效成分完整的释放。结冻和融化稳定性试验条件为在(-10±2)℃和(20±2)℃之间做4个循环，每个循环为结冻18h融化6h。微囊液体制剂主要有微囊悬浮剂（CS）、微囊悬浮-水乳剂（ZW）、微囊悬浮-悬浮剂（ZC）、微囊悬浮-悬乳剂（ZE）等剂型。

1.微囊悬浮剂（CS）及微囊悬浮-悬浮剂（ZC）冻融稳定性合格要求为：储后游离有效成分含量、酸碱度或pH范围、湿筛试验、悬浮率、自发分散性、倾倒性等应符合产品规格要求；

2.微囊悬浮-水乳剂（ZW）及微囊悬浮-悬乳剂（ZE）冻融稳定性合格要求为：储后游离有效成分含量、酸碱度或pH范围、湿筛试验、分散稳定性、倾倒性等应符合产品规格要求。

1. Introduction

The pesticide freeze-thaw stability test chamber is designed and manufactured in accordance with NYT 2989-2016 pesticide registration product specifications. It is used for freeze-thaw stability test of microcapsule liquid preparations. The compressor, heating part and power control part are all imported parts with high quality and high performance. The temperature difference of each point in the freezing and thawing box does not exceed 1℃ when operating at full load. Automatic control, real-time dynamic display of data curve, automatic storage of test data, and automatic recovery function for unexpected termination of test.

Freeze-thaw stability tests should be carried out for microencapsulated liquid preparations. The purpose of the test is to ensure the integrity of the capsule when the temperature changes in the encapsulated formulation, so as to ensure the complete release of the active ingredients. The freezing and thawing stability test conditions are 4 cycles between (-10±2)℃ and (20±2)℃, and each cycle is freezing for 18h and thawing for 6h. Microcapsule liquid preparations mainly include microcapsule suspension (CS), microcapsule suspension-water emulsion (ZW), microcapsule suspension-suspension (ZC), microcapsule suspension-suspension emulsion (ZE) and other dosage forms.

1. Qualified requirements for freeze-thaw stability of microcapsule suspension (CS) and microcapsule suspension-suspension (ZC) are: free active ingredient content after storage, pH or pH range, wet sieve test, suspension rate, spontaneous dispersion, Pourability, etc. should meet product specifications;

2. Qualified requirements for freeze-thaw stability of microcapsule suspension-water emulsion (ZW) and microcapsule suspension-suspoemulsion (ZE) are: free active ingredient content after storage, pH or pH range, wet sieve test, dispersion stability, dumping The performance should meet the product specification requirements.

二、技术参数：

1、有效容积：500×500×600mm

2、外形尺寸：1350×850×1700mm

3、温度范围：-40℃~+80℃

4、升降温速率：升温速率：3℃/min

5、降温速率：0.7~1℃/min（+80℃<->-40℃。空载，全程平均）

6、循环次数：4次（任意设定）

7、冻结时间：18小时（任意设定）

8、融化时间：6小时（任意设定）

9、温度波动度：≤±0.5℃

10、温度均匀度：≤2℃

11、温度偏差：≤±2℃

12、运行功率：≈3.0KW

13、净重：150KG

2. Technical parameters

1. Effective volume: 500×500×600mm

2. Dimension: 1350 × 850 × 1700mm

3. Temperature range: -40℃~+80℃

4, ramp rate: heating rate: 3 ℃ / min

5. Cooling rate: 0.7~1℃/min (+80℃<->-40℃. No load, average throughout the whole process)

6. Number of cycles: 4 times (arbitrarily set)

7. Freezing time: 18 hours (arbitrarily set)

8. Melting time: 6 hours (arbitrarily set)

9. Temperature fluctuation: ≤±0.5℃

10. Temperature uniformity: ≤2℃

11. Temperature deviation: ≤±2℃

12. Operating power: ≈3.0KW

13. Net weight: 150KG

三、主机配置：

1、7寸TFT真彩液晶、可编程温度控制仪

2、制冷压缩机：法国泰康全封闭风冷，

3、PLC主模块、温度传感器模块、通讯线、以太网/USB延长、配件包

4、支持USB接口连接移动U盘导出历史曲线、历史数据、报警记录，可用PC上位机软件打开 U盘中导出的数据进行查看、打印、记录

5、远程控制

A电脑安装上位机监控软件通过以太网口直连或者无线路器由局域网进行远程监控:

6、接口功能：接口设备支持微型打印机

7、运行模式：定值、程式运行可以选择

8、温湿度精度显示调节

9、屏保、亮度可调功能

10、超温、报警停机功能

11、温度多点补偿功能

12、 工作室：304不锈钢板

13、外壳：优质冷板表面喷塑                       

14、带观察窗照明灯

Three, host configuration:

1. 7-inch TFT true color LCD, programmable temperature controller

2. Refrigeration compressor: French Taikang fully enclosed air-cooled,

3. PLC main module, temperature sensor module, communication line, Ethernet/USB extension, accessory package

4. Support the USB interface to connect to the mobile U disk to export historical curves, historical data, and alarm records. You can open the exported data in the U disk with the PC host computer software to view, print, and record

5. Remote control

A computer installs the host computer monitoring software through the Ethernet port direct connection or the wireless router is remotely monitored by the local area network:

6. Interface function: The interface device supports micro printers

7. Operation mode: fixed value and program operation can be selected

8. Temperature and humidity accuracy display adjustment

9. Screen saver and brightness adjustable function

10. Over temperature, alarm and shutdown function

11. Temperature multi-point compensation function

12. Studio: 304 stainless steel plate

13. Shell: high-quality cold plate with plastic spray on the surface

14. Lighting lamp with observation window