ຮັບສ່ວນຫຼຸດພິເສດຕາມປະລິມານ, ອັບເດດລາຄາຂາຍສົ່ງ ແລະ ການແຈ້ງເຕືອນສິນຄ້າໃໝ່ສົ່ງກົງເຖິງອິນບັອກຂອງທ່ານ.
ໂດຍການສະໝັກສະມາຊິກ, ທ່ານຍອມຮັບ ເງື່ອນໄຂການໃຫ້ບໍລິການ ແລະ ນະໂຍບາຍຄວາມເປັນສ່ວນຕົວ ຂອງພວກເຮົາ.
ເຂົ້າເຖິງຜູ້ຊ່ຽວຊານທີ່ໄດ້ຮັບການຢັ້ງຢືນຂອງພວກເຮົາໂດຍກົງ
- Function and Applications:
This molecular model construction kit for demonstration is appropriate to the chemistry classes organics. The kit contains all needed elements and connections for ball-and-stick and semi space filling models of acyclic and cyclic standard molecules.
- Benefits:
It is suitable for demonstration of different conformations and stereo isomers.
The models are easy to assemble and disassemble. They are characterised by high quality and durability.
The kit is delivered in a plastic case, which enables a clear and comfortable storage.
Every part is extreme robust and colored according to international standards.
- Equipment and technical data:
The diameters of the balls are approx. 17 mm for hydrogen and approx. 23 mm for carbon and most of the other elements.
Content:
36 black balls (Carbon)
40 white balls (Hydrogen)
12 red balls (Oxygen)
4 blue balls (Nitrogen
2 yellow balls (Sulphur)
4 orange balls (Phosphorus)
8 green balls (Halogen)
3 light-gray ball (Metal)
55 connectors, medium
25 connectors, long (flexible)
60 connectors, short
