1. The raw material samples to be tested should be representative. Therefore, it is recommended that the sampling points of each batch of raw materials be as many as possible, and the number of samples should be as much as possible (because adulteration is not only present in the same bag of raw materials, but also in different bag raw materials). I experienced: in a batch of flour, the package around the car is qualified flour, the middle part is a non-conforming product with 50% bran; in a batch of calcium hydrogen phosphate, more than 10 packets of color are gray, the calcium content is high. Insufficient phosphorus content is suspected to be a non-conforming product of stone powder.
2, when the raw material microscopy, often just a simple look, and did not do the appropriate treatment. It is recommended to combine some treatment methods before microscopy to detect more adulterants. Specific practices are:
(1) Screening: The sample is sieved by standard sieves of different size holes, and samples of different sizes can be screened for targeted microscopic examination.
(2) Carbon tetrachloride treatment: Samples with high oil content or a large amount of particles adhered to it can be treated with carbon tetrachloride solution (fish meal, meat and bone meal and most poultry feed and unknown feed are best used in this method). This allows the use of different density principles to separate light-weight floats (generally adulterated in floating objects) and heavy-density materials.
(3), acetone treatment: the use of acetone to dissolve organic matter and dehydration properties, used to treat the formation of agglomerate structure caused by molasses or high moisture, the sample can be more clearly observed.
For the suspected samples of microscopic examination, I do not know how to use some simple chemical reactions to qualitative analysis (such as dilute hydrochloric acid method, iodine-potassium iodide staining, phloroglucin staining, etc.), but blindly determine.
3, over-reliance on laboratory testing indicators, not sensitive to sensory testing. Some raw materials can only distinguish between true and false by sensory inspection. It is not necessary to send them to the test (such as a lot of bran in the flour, sour and sour in the soybean meal), and it is a taboo for quality control without thinking about mechanically.
Ultra Plantâ„¢ Grow Light offers One Chip Technology aimed to meet your indoor growing expectation such as improve plants' quality, increase yield, or better the margin, etc., all for helping you realize a higher return on your crops.
Ultra Plantâ„¢ Grow Light is combined our advanced All-In-One technology with patented optical design and customized light full spectrum supported from our experienced LED engineers, plant specialists and other partners working on horticulture.
From Ultra Plantâ„¢ APP, you are able to schedule the growing process including photoperiod, brightness and spectral in advance. The lighting system will help you grow smarter, easier and better.
Ultra Plantâ„¢ is the most versatile horticultural grow lighting fixture for indoor plants with flexible full spectrum, brightness control and uniform, wider light distribution, suitable for top lighting of all types of crops. No matter it applies to anywhere for any crop, Ultra Plantâ„¢ can do perfect work for you.
White Led Grow Light,White Grow Light,White Grow Light Bulb,White Light For Plants
Feton Corporation , https://www.fetonledlight.com