(a) Reagent list
No.
Reagent name
Quantity
unit
Note
01
Phenol solution
4
bottle
100ml/bottle
02
Sodium hypochlorite
8
bottle
100ml/bottle
03
Ammonium nitrogen standard solution (4ppm)
2
bottle
100ml/bottle
04
Ammonium nitrogen standard solution (8ppm)
1
bottle
100ml/bottle
05
Molybdenum sulphate
4
bottle
100ml/bottle
06
Effective Phosphorus Standard Solution (1ppm)
2
bottle
100ml/bottle
07
Effective Phosphorus Standard Solution (2ppm)
1
bottle
100ml/bottle
08
EDTA solution
1
bottle
100ml/bottle
09
Sodium tetraphenylborate solution
2
bottle
100ml/bottle
10
Formaldehyde solution
1
bottle
100ml/bottle
11
Available potassium standard solution (20ppm)
3
bottle
100ml/bottle
12
Potassium dichromate solution
4
bottle
100ml/bottle
13
Organic standard liquid
1
bottle
100ml/bottle
14
Potassium chloride
15
bag
15g/bag
15
Sodium bicarbonate
20
bag
8.4g/bag
16
Sodium nitrate
20
bag
17g/bag
17
Citric acid
10
bag
4g/bag
18
ascorbic acid
1
bag
10g/bag
Note: (1) Please purchase from this reagent tank for the lack of concentrated sulfuric acid (mainly used when testing soil organic matter).
(2) After the chemical liquid in the reagent box is used, it can be purchased at the local chemical store. If individual reagents are not available for a time, you can contact the Qiangsheng Instrument Center for purchasing.
(b) Appliance List
No.
Appliance name
specification
Quantity
Note
01
Tianping
1/10
1 set
The balance can only measure the soil, such as measuring the fertilizer needs more than 1/100 balance.
02
White plastic bottle
4
03
Pipette
5ml
1
04
Pipette
10ml
1
05
Beaker
100ml
6
06
Triangle bottle
50ml
2
07
Measuring cylinder
100ml
1
08
Volumetric flask
50ml
2
09
Volumetric flask
100ml
2
10
Volumetric flask
200ml
1
11
Wash bottle
1
12
Suction ball
1
13
dropper
3 only
14
filter paper
1 box
15
Spoon
1
Note: The use and maintenance of some vessels: 1. Wash the new glassware first with water, then soak it in hot potassium dichromate bath to remove impure substances, then rinse with water, and finally wash it several times with distilled water. . 2. For greased glassware, it can be washed with hot soapy water or alkaline alcohol lotion, and finally washed several times with distilled water. 3. Wash the plastic utensils with 1+3 nitric acid and rinse with distilled water. 4. When using vessels such as pipettes, volumetric flasks, and graduated cylinders in the experiment, make the liquid bottom surface parallel to the scale of the vessel. 5. When using the balance, place the balance on the workbench steadily, so that the pointer on both sides of the balance is stable on the central tick line. If the pointer is continuously swinging to both sides, the balance can be adjusted so that the swing distance of both sides of the pointer is equal. 6, special attention, in the experiment using concentrated sulfuric acid and water, concentrated sulfuric acid should be slowly injected into the water, can not be injected into the concentrated sulfuric acid water.
Hangzhou Top Instrument Co., Ltd.
Room 806, Songdu Building, No. 69 Wangjiang Road, Hangzhou
Tel 86059660 86062776
fax
Medium-sized Courtyard Scrubber
The medium-sized courtyard scrubber is suitable for cleaning the floor of a large garden, with simple operation and high efficiency.
There are some minor issues that need to be paid attention to in the process high-pressure cleaners, which are summarized as follows:
1. When operating the high pressure washer: Always wear proper goggles, gloves and masks.
2. When the Spray Gun of the high pressure washer is not used, the setting trigger must always be locked in a safe state.
3. Always check all the electrical connections of the high pressure washer.
4. Frequently check all the high-pressure cleaner fluids.
5. Always keep hands and feet away from the cleaning nozzle.
6. Before disconnecting the hose, always release the pressure in the Washing Machine.
7. Always use low pressure to work as much as possible, but the pressure must be sufficient to complete the work.
8. Never start the equipment before turning on the water supply and allowing proper water to flow through the spray gun stem. Then connect the required cleaning nozzle to the spray gun stem
superior.
9. Always drain the water in the hose after each use.
Medium-Sized Courtyard Scrubber,Floor Pressure Washer,Household Portable High Pressure Washer,Portable Car Pressure Washer
Ningbo Senmiao Trading Co., Ltd. , https://www.nbsenmiao.com