Also note that the specimen must be covered with toilet paper when the end to mutual exchange, so that the wood specimens and toilet paper clip neatly inside the flat. When such overlap to a considerable height Jinan herbarium specimens, namely with a rope tied at both ends of the specimen clamp tight. The new pressure to change paper samples a day for at least 1-2 times a dry paper. These dry paper is best after the sun or fire rearward slightly warm as well, with its heat can dry process plant specimens gradually increased, when changing the paper must be done the following: (1) when the initial change paper To sample a portion of the leaves flip, so that there are two kinds of leaves Shaanxi ventral and back on herbarium specimens specimens, such as dry leaves will flip is easy to break. Then if deemed too dense foliage specimens can cut part of the appropriate sparse. (2) the initial change to the attention of the overburden pressure of note paper, carefully open the key Shandong herbarium specimens, when pressed specimen is good or bad overlapping leaves and flowers, etc., must be noted. ② red specimen production. Some, such as tomatoes and other red fruits washed with 4 ml first immersed in formalin, 3 g of boric acid and 400 ml of water treatment solution dubbed, about 1 to 3 days after the fruit that is browned, then Fruit can be removed a small amount of injection to the inside with 20 ml of 10% sodium sulfate, 10 g of boric acid and 580 ml of water from the preparation of the preservative solution, followed by long-term immersion in such fruit preservation solution, gradually restored to the original red. ③ purple specimen production. Wash fruits and purple grapes first in 250 ml of formalin, 500 ml saturated solution of sodium chloride plus 4350 ml distilled water treatment solution immersed into 2 to 3 months, after removing washed into a % to 2% formalin solution for long term storage. ④ white specimen production. The other white flowers with roots washed and placed in 1% to 4% of the sulfite solution, and then placed under the sunlight for a long time, until the specimen into a snow drift in white sun. Shanghai herbarium specimens, herbarium specimens, teaching voyage by voyage Teaching Equipment Co., Ltd. Xinxiang City. Xinxiang City voyage Teaching Equipment Co. (www.xxyuanhang.cn) (www.yuanhang369.com) strong, credible, in Xinxiang specimen model industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the voyage into the brilliant teaching and you work for a better future! You can also access (www.yuanhang369.com/supply_details_42264955.html), for more information about the company.