| Ammonium Chloride, 10% w/v | growinglabs.com | 56 USD | 74 USD | −24.3% |
| Brilliant Green | growinglabs.com | 55 USD | 72.7 USD | −24.3% |
| Calcium Carbonate Standard (1mL = 1mg CaCO₃ = 0.4mg Ca), for Hardness | growinglabs.com | 37 USD | 67.4 USD | −24.3% |
| Fluoride Standard, 10 ppm Fˉ Premixed with Equal Volume of TISAB II | growinglabs.com | 65 USD | 379.6 USD | −24.2% |
| Sodium Potassium Tartrate, 30% w/v, for Nitrogen (Ammonia) | growinglabs.com | 63 USD | 83.1 USD | −24.2% |
| Sodium Acetate, 0.2M (0.2N), for Arsenic | growinglabs.com | 60 USD | 79.2 USD | −24.2% |
| Bromophenol Blue, Sodium Salt, ACS | growinglabs.com | 58 USD | 76.5 USD | −24.2% |
| Barium Chloride, 20% w/v | growinglabs.com | 39 USD | 200.7 USD | −24.2% |
| Ammonium Molybdate, 4.8% w/v, for Phosphorus | growinglabs.com | 71 USD | 93.5 USD | −24.1% |
| Lead Acetate, 10% w/v, for Arsenic | growinglabs.com | 71 USD | 119.7 USD | −24.1% |
| Barium Chloride, 0.1N (0.05M) | growinglabs.com | 69 USD | 209 USD | −24.1% |
| Bromate-Bromide, 0.5N (0.083M) | growinglabs.com | 66 USD | 258.5 USD | −24.1% |
| Cobaltous Chloride, 1.2% w/v, for Nitrogen (Ammonia), Nitrogen (Organic) | growinglabs.com | 55 USD | 72.5 USD | −24.1% |
| Water Hardness Buffer | growinglabs.com | 49 USD | 83 USD | −24.1% |
| Ceric Ammonium Sulfate, 0.10N (0.10M) in 1.0N Sulfuric Acid | growinglabs.com | 46 USD | 1,082.3 USD | −24.1% |
| Boron AA Standard, 1000ppm (1mL = 1mg B) | growinglabs.com | 36 USD | 83 USD | −24.1% |
| Chloride Standard, 1000ppm (1mL = 1mg Clˉ) (0.0282N) (NaCl in Water) | growinglabs.com | 31 USD | 68.5 USD | −24.1% |
| Buffer Solution pH 7.0 @ 25°C, Color Coded Yellow | growinglabs.com | 28 USD | 177.1 USD | −24.1% |
| Bromophenol Blue, 0.1% Aqueous, pH 3.0 - 4.6 Yellow to Blue | growinglabs.com | 24 USD | 90.9 USD | −24.1% |
| Ammonium Hydroxide, 5.0N (5.0M) | growinglabs.com | 66 USD | 204 USD | −24% |
| Ammonium Hydroxide, 6.0N (6.0M) | growinglabs.com | 56 USD | 105.4 USD | −24% |
| Sodium Phenate Solution, for Nitrogen (Ammonia), Nitrogen (Organic) | growinglabs.com | 56 USD | 116.7 USD | −24% |
| Buffer Solution pH 7.7 @ 25°C | growinglabs.com | 43 USD | 403.6 USD | −24% |
| Chloride Standard, 500ppm (1mL = 0.5mg Clˉ) (0.0141N) (NaCl in Water) | growinglabs.com | 38 USD | 73.7 USD | −24% |
| Buffer Solution pH 9.18 @ 25°C | growinglabs.com | 37 USD | 450.6 USD | −24% |
| Cadmium AA Standard, 1000ppm (1mL = 1mg Cd) | growinglabs.com | 37 USD | 88.1 USD | −24% |
| Barium AA Standard, 1000ppm (1mL = 1mg Ba) | growinglabs.com | 36 USD | 88.2 USD | −24% |
| Calcium AA Standard, 1000ppm (1mL = 1mg Ca) | growinglabs.com | 33 USD | 77.6 USD | −24% |
| Ammonium Oxalate, 3.5% w/v | growinglabs.com | 74 USD | 97.2 USD | −23.9% |
| Ammonium Buffer | growinglabs.com | 67 USD | 88 USD | −23.9% |
| p-Dimethylaminobenzaldehyde Solution, 1.8%, for Hydrazine, Nickel | growinglabs.com | 67 USD | 117.5 USD | −23.9% |
| Fluoride Standard, 0.5 ppm Fˉ Premixed with Equal Volume of TISAB II | growinglabs.com | 53 USD | 107.3 USD | −23.9% |
| Bromocresol Green - Methyl Red, Alcoholic, for Alkalinity | growinglabs.com | 51 USD | 141.8 USD | −23.9% |
| Boric Acid, ACS | growinglabs.com | 50 USD | 65.7 USD | −23.9% |
| Buffer Solution pH 7.38 @ 25°C | growinglabs.com | 50 USD | 106.5 USD | −23.9% |
| Arsenious Acid Solution, For Iodide | growinglabs.com | 49 USD | 64.4 USD | −23.9% |
| Ammonium Hydroxide, 50% v/v (1+1) | growinglabs.com | 47 USD | 187.4 USD | −23.9% |
| Water Hardness Buffer, Odorless | growinglabs.com | 47 USD | 271.1 USD | −23.9% |
| Buffer Solution pH 1.68 @ 25°C | growinglabs.com | 39 USD | 194.5 USD | −23.9% |
| Arsenic AA Standard, 1000ppm (1mL = 1mg As) | growinglabs.com | 38 USD | 98.6 USD | −23.9% |