Equipment
| Safety Electric Stove: adjustable, be aware of leakage
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| Iron stand with butterfly clips
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| Electronic balance (0.01g): Precision instrument
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| Analytical balance (0.0001g): Precision instrument
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| Computer:
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| Printer
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| Bottle: 500mL
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| Ear Cleaning Ball: 60mL
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| Plastic measuring bucket: 1000mL
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| Burette: 60mm x 30mm fragile
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| Drier: 180cm fragile
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| Weighing paper: 75mm*75mm
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| One-time dropper: 0-5 mL
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| Calculator:
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| Timer: Can time, "hours, minutes, seconds"
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| Absorbent paper:
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| Disposable gloves: Small size
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| Weighing white cotton gloves: Small size
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| Long-sleeved acid and alkali-resistant rubber gloves: Small size
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| Insulating gloves: Small size
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| One-time use head cover: Small size
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| Disposable protective mask: Small size
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| Laboratory coat: Medium size
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| Hair care hat: Medium size
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| Safety goggles: Medium size
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| Micropipette rack: plastic material
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| Medicine Spoon: Stainless Steel 180mm
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| Iodine bottle: 500mL fragile
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| Conical flask: 300mL fragile
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| Beaker: 100mL, fragile
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| Micropipette: 25mL, 15mL, 10mL fragile
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| Drop bottle: 60mL fragile
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| Bottle: 1000ml, 500ml fragile
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| Flask: 20mL, 10mL fragile
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| Titrator: 50mL fragile
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| Glass rod: 20 cm fragile
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| Thermometer: fragile 0-100℃
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Chemical substances | Potassium dichromate standard: stable in properties, oxidizing agent, stored in a dry place
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| Sodium carbonate: alkaline, with a certain irritability, avoid contact with eyes and skin, store in a sealed container.
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| Sodium thiosulfate standard solution: Reductive, decomposes when exposed to acid, store in a sealed container
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| Iodine standard solution: oxidizing, corrosive, volatile, stored in a brown reagent bottle
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| Dense hydrochloric acid: Strongly acidic, volatile, use in a fume hood, dilute with acid into water
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| Hydrochloric acid solution: It has certain volatility and acidity, be cautious and protect yourself.
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| Hydrogen peroxide: Oxidizing, with certain corrosiveness, may produce oxygen during decomposition, keep away from flammable materials.
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| Methyl red: low toxicity, used for indicating acid-base titration
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| Methyl red-bromocresol green mixed indicator: Used for acid-base titration.
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| Starch indicator: Used to indicate the endpoint of the iodine quantity method
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| Potassium iodide: White crystals, no special hazards.
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| Highly corrosive, strong acid, sulfuric acid. When diluted, add acid to water, be careful to protect yourself.
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| Sodium hydroxide: alkaline, corrosive, avoid contact with skin.
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