HORIBA 140-4 pH 4 Standard Solution +/- 0.02 pH (pH 4.01 @ 25° C) - 4Litre

Only 1 left

Good price

$195.62 is 5% below the $206.94 it normally sells for.

Now: $195.62
Normally: $206.94
Lowest in 109 days: $190.05(Sep 10)
Highest: $238.84

Evidence: Strong109 days tracked384 price changeschecked 53 min ago

Where today's price sits

Now $195.62Normal $206.94$238.84

View on amazon.com

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Amazon price jumps and real deals, posted on X: @trackpindeals (opens in a new tab)

Price history

Tracked since Jul 26 · 109 days · 384 price changes

Ahead of Black Friday 2026 (Nov 27), it is already 5% below its normal price of $206.94. HORIBA 140-4 pH 4 Standard Solution +/- 0.02 pH (pH 4.01 @ 25° C) price history, checked Nov 12, 2026: current price $195.62, normal (typical) price $206.94, average $209.76 over 109 days, lowest $190.05 (Sep 10, 2026), highest $238.84 (Sep 4, 2026).

Price
Normal $206.94
5% or more below normal

How often does it drop below normal?

In the 109 days we've tracked it, it stayed 5% or more below today's normal price for an hour or more 30 times, typically lasting less than a day. The last time ended Nov 11. It's below normal right now, for less than an hour so far. Brief dips under an hour (2) aren't counted.

A count of what happened, not a prediction.

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Get this as JSONThe same verdict and prices, from the TrackPin API.

GET/api/v1/product/B00U7UP7YC

Request

curl https://trackpin.co/api/v1/product/B00U7UP7YC \
  -H "x-api-key: $TRACKPIN_API_KEY"

const res = await fetch("https://trackpin.co/api/v1/product/B00U7UP7YC", {
  headers: { "x-api-key": process.env.TRACKPIN_API_KEY },
});
const product = await res.json();

console.log(product.verdict.label, product.price.reference_cents);

import os, requests

r = requests.get(
    "https://trackpin.co/api/v1/product/B00U7UP7YC",
    headers={"x-api-key": os.environ["TRACKPIN_API_KEY"]},
)
product = r.json()

print(product["verdict"]["label"], product["price"]["reference_cents"])

This is exactly what the API returns for this product. Free keys include 100 requests a day.

Request a key

Live responseAs of 23:53 UTC

{
  "asin": "B00U7UP7YC",
  "title": "HORIBA 140-4 pH 4 Standard Solution +/- 0.02 pH (pH 4.01 @ 25° C) - 4Litre",
  "image": "https://m.media-amazon.com/images/I/71XQ7Inrb9L._AC_SL500_.jpg",
  "currency": "USD",
  "category": "BISS Basic",
  "category_label": "Industrial & Scientific",
  "in_stock": true,
  "price": {
    "current_cents": 19562,
    "reference_cents": 20694,
    "discount_pct": 5.47,
    "is_deal": true,
    "observed_at": 1794524362462,
    "changed_at": 1794524362462,
    "checked_at": 1794524362462,
    "source": "stored"
  },
  "verdict": {
    "label": "good",
    "text": "Good price",
    "pct_vs_normal": 5.47,
    "evidence": "strong",
    "stale": false,
    "suspect": false,
    "steady_since": null,
    "sentence": "Good price. $195.62 is 5% below the $206.94 it normally sells for."
  },
  "listing_claim": null,
  "stats": {
    "min_cents": 19005,
    "max_cents": 23884,
    "avg_cents": 20976,
    "history_days": 109,
    "price_levels": 408,
    "price_changes": 384,
    "distinct_prices": 19,
    "lowest_at": 1789004821930
  },
  "history": [
    {
      "price_cents": 19963,
      "from": 1794459521224,
      "to": 1794460957485
    },
    {
      "price_cents": 20163,
      "from": 1794463197911,
      "to": 1794463197911
    },
    {
      "price_cents": 20569,
      "from": 1794470595411,
      "to": 1794471653828
    },
    {
      "price_cents": 20983,
      "from": 1794477876263,
      "to": 1794504400897
    },
    {
      "price_cents": 19562,
      "from": 1794524362462,
      "to": 1794524362462
    }
  ],
  "last_seen": 1794524375212
}
// … 403 more steps in the full response

Normal price: the lowest price level the product held for at least 15% of the last 45 days (about a week). Prices within 3% of each other count as one level, and we use the lowest price in that level. How we calculate it → Prices are observations of amazon.com and may be incomplete or delayed. TrackPin is not affiliated with Amazon.

HORIBA 140-4 pH 4 Standard Solution +/- 0.02 pH (pH 4.01 @ 25° C) - 4Litre

Price history

How often does it drop below normal?

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