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# Measuring pH Level

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6uJvpXC43onNIIwhMlWo%2Fuploads%2FGyPNdp0KfxcB7sXjSU86%2Fimage.png?alt=media&#x26;token=e59432f7-bf84-41bd-a4ee-47b167b93876" alt=""><figcaption></figcaption></figure>

Human activities emit pollutants into the water that affect the pH level and harm aquatic life.

### Experiment Preparations

#### Prepare the following equipment:

* Futureboard Lite
* pH measuring device
* 3 color connecting cable

#### Wiring

Connect the pH measuring device to futureboard lite.

<figure><img src="https://files.gitbook.com/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6uJvpXC43onNIIwhMlWo%2Fuploads%2FOpEfYVFgck3oY5DWTt9j%2Fph_wiring.png?alt=media&#x26;token=12df7d8f-b76c-418a-af61-613cf1cb2e28" alt=""><figcaption></figcaption></figure>

#### Select Program

Open 「pH酸鹼值.py」.

{% embed url="<https://youtu.be/SaZO2MJzdlM>" %}

#### Begin Measurements

First, put the device into the pH 4.0 buffer solution and wait 2 minutes, then press button A to calibrate.

Then wash and wipe the device completely and put the device into the pH9.18 buffer solution. Wait 2 minutes then press button B to calibrate.

After calibration, futureboard lite will display the measured pH value.

{% embed url="<https://youtu.be/keSccyhM_FE?si=wbTTXVtlmf-O4V4T&t=71>" %}

### 注意事項

1. 感應器頭部帶有保護蓋，使用前請小心扭下保護瓶，然後將瓶蓋拆下來。
2. 請勿弄污、弄花感應器的頭部。
3. 請小心不要倒瀉保護瓶的液體。
4. 每次使用後都需要使用蒸餾水清潔感應器。
5. 使用過後請將保護瓶裝回，不要將感應器暴露在空氣中。
6. 這種感應器並不是即時有反應，請耐心等待1分鐘。
7. 使用上強酸/強鹼時，請加以小心並佩戴護目鏡。


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