The great potions scientist and dog lover, Mr. Pavlov, once said, "With man, there is medical activity."

It is true that since the birth of human beings, various medical activities have been carried out, among which the search for a universal antidote against all poisons has been carried out almost throughout human history.

[In view of the general environment,

And the shaman, after a lot of research, discovered that bezoar, activated charcoal, and snake stone (fossilized shark teeth) have a wide range of detoxification powers.

Of course, this "extensive" is also relatively speaking, and does not really solve all toxins.

The potion taught by Professor Snape is also a "universal" antidote with a certain limit.

However, after the little wizards saw the ingredients on the blackboard, they were all a little inexplicably afraid:

Cantharids, aconitum aconitum, bitter almonds, barramundi venom, puffer fish liver, longhorned toad skin...... It's full of poisonous substances, and every single one can poison people.

If you just look at the recipe, it's hard not to suspect that this is not a universal antidote, but the ultimate blend of poisons!

MacMillan took advantage of Snape's back to turn around, his lips moved slightly, and in a weak mosquito voice, he said:

"Are you sure he didn't get the recipe wrong?"

If Snape confused the poison with the antidote, and everyone took it after they had boiled it, wouldn't it be a proper end?

Justin hesitated for a moment and whispered, "Could this be the legendary ...... Fighting poison with poison?"

Snape didn't turn around, but as if he had long eyes behind his back, he whispered:

"Do you two have a word you don't know, McMillan or Finriri?"

The two of them were startled, and stood up tremblingly, and Justin stammered, "Professor, we know how to read."

"And what are you talking about?" Snape turned, his cold black eyes glinting with a terrifying light.

Justin was too scared to speak, and so was McMillan.

However, he suddenly remembered the little Muggle story he had heard from Rove:

The old professor temporarily changed the exam time, and only one student questioned it in class, saying that it would affect his revision of other homework.

The old professor admired the courage of the student and gave him a perfect score without letting him take the exam.

Maybe Snape was the same, disliking submissive little wizards and preferring unruly students?

When Rove was in his second year, didn't he also change the ingredients of Snape's potion, but in the end he was given extra points?!

When McMillan thought of this, he was angry, his head was hot, and he said loudly:

"Professor Snape, I think you're wrong, you're not giving an antidote, you're giving a poison formula!"

As soon as these words came out, the stone was shattered!

The students all took a breath of cold air, and dared to say this kind of thing, McMillan doesn't want to be spicy?

Rove couldn't help but hold his forehead, did this stupid kid drink fake wine, or did he drink too much poisonous chicken soup?

Snape walked slowly towards McMillan, he stared at the other man, and said coldly:

"So, you're questioning the potion I invented?"

"No...... I just think ......" McMillan couldn't help but shrink and said:

"These magic materials are highly poisonous, and the potions brewed can really be used as antidotes?"

"Good, good, good!" Snape said three good things in a row, and sneered:

"I never thought I'd run into a fourth-grader who didn't know such a simple pharmacological knowledge - Scamander! - You will answer this stupid question for me."

Rove stood up helplessly and said softly, "Before brewing potions, we will reduce and detoxify poisonous magical materials."

"What are some ways to reduce and remove drugs?"

"Heating to detoxify, excipients to detoxify, press to detoxify, leaching and bleaching to remove poison and remove toxic parts – these are the ways in which toxicity is reduced." Rove fast track.

Without Snape's reminder, the little wizards hurriedly jotted down their notes.

"Twenty points for your Hufflepuff hit, stay after school and clean the toads, McMillan."

Snape's face was close to McMillan, who wanted to cry without tears, and showed his trademark sarcastic smile:

"If I hear you question my potions again, I'll make you regret it greatly."

In the following classes, no student dared to question Snape, and after receiving the magic materials, everyone honestly followed the steps of the blackboard and carefully boiled the antidote.

As Rove said, before boiling an antidote, you need to depoison the magic materials, and if this step is not handled properly, the potion will become poison.

Snape has said how to detoxify each material, but he has never said it systematically, and only mentions it in passing when he encounters a certain material.

Like the way the puffer fish liver is processed, it can even be traced back to the first grade, who remembers this?!

The little wizards had to look through their previous notes with great difficulty, and began to look at them one by one.

Rov and Shirley were also working on magical materials, but they didn't follow Snape's instructions to depoison them.

Snape, of course, noticed this, and immediately stood by the crucible, staring at the two men with dead fish eyes.

When the other students saw this, they all reciprocated with infinite admiration for Rove and Shirley.

McMillan has just tried the law, and the two of them dare to defy the wind, what a brave!

McMillan was also happy, and now someone accompanied him to confine...... Hey!

Shirley, who was dealing with the horned toad, was instinctively a little nervous, and Rove sat next to the girl and gently held her slightly cool hand.

Although he let go quickly, Snape noticed it, and he pulled the corners of his mouth with a sneer.

In front of me, you dare to hold hands like this...... Scamander and Swinton have a way to die!

But Snape was soon stunned.

When he detoxifies aconitum aconite, he adds licorice and honey and steam it over high heat for a long time...... The steps are extremely cumbersome.

Scamander, on the other hand, simply added a potion, rinsed it for a while, and then threw the aconitum into the cauldron.

A faint stream of silvery-white steam came out of the crucible, indicating that the detoxification was successful...... How could Scamander be so fast?!

Snape couldn't help but pick up the vial, put it on the hooked nose and sniffed it, he frowned, "Alum?"

"Yes, Professor, I'm in alum!" Rove nodded and said:

"Alum is a double salt, which can be dissociated into aluminum ions in water to adsorb toxic alkaloids and glycosides, and the use of alum to make aconitum precipitate in aqueous solution and accelerate the elimination of toxic substances."

「……」

Snape looked confused, aluminum ions, aconitine, alkaloids...... What the hell is this?

After a moment of silence, his eyes flashed, "Who taught you to deal with aconitum like this?"

Rove couldn't say he was a chemistry teacher in his previous life, he thought for a moment and said, "That's how Muggles are handled.

They have also invented many other chemicals that can be used to process all kinds of magical materials, which are much more convenient than traditional methods."

Snape's eyes narrowed, it seemed that Muggles still had some way.

"Professor, I've got it all here." Rove pulled out a notebook and handed it to Snape:

"If you don't understand, you can ask me...... I know a little bit about chemistry."

「……」

Snape hesitated, but took the notebook.

The class was in an uproar.

……

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