Determination of Tobacco Mineral Content - Potentiometric Titration

During the growth and development of tobacco, tobacco needs to absorb a large amount of mineral elements to maintain normal life activities. Among them, calcium and magnesium are the most demanded for tobacco, and have obvious influence on tobacco products and quality. These are called a large number of elements. Among them, calcium is a component of tobacco cell wall. If the content is too high, it will cause the tobacco sheet to be too thick, rough and low in use value. Magnesium is an important component of chlorophyll and directly participates in light and action. Therefore, accurate determination of calcium and magnesium content in tobacco leaves plays an important role in fertilization, improvement and quality control of tobacco leaves.

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common nails

iron nails


Shank of nails:

Smooth Shank Nails: There are no deformations on the shank,making nails with a smooth shank the easiest to drive.Smooth shank nails offer the least pull-out resistance whencompared with spiral and ring shanks.

Concrete Nails: It is manufactured from ductile, high strength carbon steel and designed for hand hammer driving into medium strength concrete and solid block.

Roofing Nails: A nail used for attaching paper or shingles to roof battens or sheathing; usually with a large head.

Annular Ring Shank: Annular threads or ''rings" areformed on the shank to increase withdrawal capacity. The[rings" create an interlock between the shank of the nailand the wood, providing superior holding power.

Spiral Shank: A spiral ''thread" on the shank causes thenail to spin during installation, creating a thread-like interlockwith the wood, which increases withdrawal capacity.Spiral-shank nails are designed to drive easier into harderwoods and dense materials while still providing increasedwithdrawal resistance.

Packing:

1kg/box, 5kg/Box,20kg/Carton, 30kg/Carton; or as your requirements.

Nails

Iron Steel Common Nail, Concrete Nail for construction, Galvanized Roofing Nail

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