to checkout total: €0.00

CATEGORIES

ORGANIC COMPOUNDS(1303)
INORGANIC COMPOUNDS(1006)
LAB EQUIPMENT(5338)
*(1)
Organic Synthesis(532)
Industry(840)
- Sculpting(2)
- Photography(164)
  - Bleach / Blix (color processing)(9)
  - Wash aids & final rinses(7)
  - Cyanotype(0)
  - Toners(0)
  - Light sensitive materials(17)
  - Developers(115)
    - B&W developing agents(12)
    - Supporting chemicals(103)
  - Stop bath (halts development)(18)
  - Fixer (removes unexposed silver halides)(10)
- Construction industry(3)
- Products for chemical laundries(38)
- Cosmetic industry(459)
- Candle manufacturing(2)
- Pyrotechnics(137)
- Household Products(6)

Currency

All prices are displayed with vat rate 23%, depending on destination country final price might differ, for most EU countries price will be decreased. If you are active tax payer in the EU after providing correct company data you will be charged only netto prices (0% VAT)

Language

US version allows shipping to all available destinations

MANUFACTURER

Select vendor

Slow oxidation of the developer, extend shelf life.

Preservatives / antioxidants

Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 1000g

Vendor: SYNTHETIKA

Price:

€7.46

incl. 23% TAX, final price will be adjusted to your country VAT rate, excl. shipping

Net price: €6.06

check more

Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 100g

Vendor: SYNTHETIKA

Price:

€2.80

incl. 23% TAX, final price will be adjusted to your country VAT rate, excl. shipping

Net price: €2.27

check more

Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 25 000g = 25kg bag

Vendor: SYNTHETIKA

Price:

€138.85

incl. 23% TAX, final price will be adjusted to your country VAT rate, excl. shipping

Net price: €112.89

check more

Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 5000g

Vendor: SYNTHETIKA

Price:

€32.62

incl. 23% TAX, final price will be adjusted to your country VAT rate, excl. shipping

Net price: €26.52

check more

Sodium sulfite (sodium sulphite) Na2SO3 Natriumsulfit Hypo clear - 500g

Vendor: SYNTHETIKA

Price:

€4.66

incl. 23% TAX, final price will be adjusted to your country VAT rate, excl. shipping

Net price: €3.79

check more

Developers oxidize when exposed to air (and also as they reduce silver halide). Oxidation turns active developing agents into inactive byproducts, causing weaker activity, color changes (browning), and sometimes sludge. Preservatives slow this down by scavenging oxygen and keeping the developing agents in their reduced, active form.